Tag Archives: sewer cleaning

The Importance of Sewer Rodding in Chicago

sewer rodding in chicago is of utmost importance.

In a city like Chicago, there are countless systems in place to ensure its smooth functioning. One such vital system is the sewer system. It may not be the most glamorous topic of discussion, but understanding the importance of sewer rodding is crucial for every resident and business owner in Chicago.

The Role of Sewers in Chicago

Before getting into the significance of sewer rodding, let’s first explore the role of sewers in Chicago. The sewer system is responsible for transporting wastewater and stormwater away from homes, businesses, and streets. It plays a critical role in maintaining public health, preventing flooding, and preserving the environment.

Chicago’s sewer system is an intricate network of underground pipes that span for miles and connect to treatment plants. These pipes collect and carry wastewater from toilets, sinks, showers, and other sources to ensure it is properly treated and disposed of. Additionally, the storm sewers collect rainwater and runoff to prevent water accumulation on the streets, reducing the risk of floods.

The Importance of Sewer Rodding

Sewer rodding, also known as drain rodding or rooter service, is a maintenance procedure that involves clearing the sewer lines of any obstructions or blockages. It is a preventative measure that aims to keep your home sewer system functioning optimally. Here are several reasons why sewer rodding is of utmost importance in Chicago:

Preventing Blockages and Backups

Over time, debris, grease, tree roots, and other foreign objects can accumulate in the sewer lines, leading to blockages. If left unaddressed, these blockages can cause sewage backups, which can result in property damage, health hazards, and significant disruptions. Regular sewer line rodding helps prevent these blockages, ensuring the smooth flow of wastewater and stormwater.

Maintaining Public Health

A properly functioning sewer system is critical for safeguarding public health. When sewer lines are blocked or compromised, wastewater can overflow into your home or business. This can contaminate the environment, exposing residents to harmful bacteria, viruses, and other pathogens. By regularly rodding sewer lines, the risk of sewage backup and potential health hazards is significantly reduced.

Minimizing Flooding Risks

Chicago is no stranger to heavy rainfall, and inadequate sewer maintenance can exacerbate the risk of flooding. When storm sewers are clogged with debris and sediment, rainwater cannot efficiently drain away, leading to streets and neighborhoods being inundated. Routine sewer rodding helps keep the sewer system clear, allowing rainwater to flow freely and minimize the chances of flooding.

Extending the Lifespan of Sewer Pipes

Regular sewer rodding helps extend the lifespan of sewer pipes. When blockages occur, the pressure within the pipes increases, potentially causing them to crack or burst. These pipe failures can be costly to repair and may require extensive excavation. By proactively clearing sewer lines, the stress on the pipes is reduced, contributing to their longevity and minimizing the need for costly repairs or replacements.

a professional sewer rodding service taking place in chicago.

By scheduling periodic drain rodding services, you can proactively identify and address any potential blockages or obstructions before they escalate into major problems.

Best Practices for Sewer Rodding

While the significance of sewer rodding is evident, it is essential to approach this maintenance task with caution and expertise. Here are some best practices for sewer rodding:

Seek Professional Assistance

When it comes to sewer rodding, it is highly recommended to seek the services of a professional plumber in Chicago. Trained technicians have the knowledge, skills, and specialized equipment necessary to safely and effectively clear sewer lines. Attempting to perform a drain rodding without proper expertise can result in further damage or incomplete blockage removal.

Regular Maintenance Schedule

Establishing a regular maintenance schedule is key to preventing sewer issues. By scheduling periodic drain rodding services, you can proactively identify and address any potential blockages or obstructions before they escalate into major problems. The frequency of sewer rodding may vary depending on factors such as the age of the sewer system, the number of users, and the surrounding environment.

Use High-Quality Equipment

Professional plumbers utilize specialized sewer rodding equipment designed to effectively remove blockages without causing damage to the pipes. These tools, such as high-pressure water jetting service and mechanical rodding machines, ensure thorough cleaning while preserving the integrity of the sewer lines. Investing in high-quality equipment guarantees the best results and reduces the risk of complications.

Consider Preventative Measures

In addition to sewer rodding, implementing preventative measures can further enhance the functionality and longevity of the sewer system. Regularly inspecting sewer pipes, installing backwater valves, and educating residents about proper disposal practices can help minimize the occurrence of blockages and sewage backups.

While sewer rodding may not be the most glamorous topic, it holds immense importance in maintaining Chicago’s sewer system’s efficiency and preventing issues such as blockages, backups, and flooding. By understanding the significance of drain rodding and following best practices, both residents and business owners can contribute to the overall well being of the city while ensuring the longevity of the sewer infrastructure.

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In need of sewer rodding service for your home or business in Chicago? Contact us below or call us at 773-599-9181!

Understanding the Cost of Sewer Line Cleaning in Chicago

several factors go into a sewer line cleaning cost in chicago.

The Importance of Sewer Line Cleaning

Keeping the sewer lines clean is an essential aspect of maintaining a healthy and functional plumbing system in any city. In Chicago, where the infrastructure is extensive and well-maintained, sewer line cleaning plays a crucial role in ensuring the efficient operation of the entire sewage disposal network. Furthermore, regular maintenance and cleaning of sewer lines can prevent costly repairs and ensure the safety and well-being of the residents.

Understanding the cost associated with sewer line cleaning in Chicago is vital for homeowners and property managers. This article aims to provide valuable insights into the factors that influence the cost of sewer line cleaning in the city, helping readers make informed decisions and effectively manage their plumbing systems.

The Factors Affecting the Cost

Before diving into the specifics of the cost of sewer line cleaning in Chicago, it is essential to familiarize ourselves with the factors that can influence the overall expenses. Several key elements play a role in determining the cost associated with sewer line cleaning, including:

1. Length and Complexity of the Sewer Line

The length and complexity of the sewer line directly impact the cost of cleaning. Longer sewer lines require more time, effort, and resources to clean thoroughly. Similarly, if a sewer line has multiple bends, junctions, or obstacles, it may require specialized equipment and techniques, adding to the overall cost.

2. Extent of the Blockage or Debris Build-Up

The severity of the blockage or debris build-up significantly affects the cost of sewer line cleaning. Minor clogs or partial blockages may be resolved relatively quickly and at a lower cost. However, severe blockages that require extensive cleaning or even repairs can be more expensive.

3. Accessibility

The accessibility of the sewer line is another important factor to consider when estimating the cost of cleaning. If the sewer line is easily accessible, such as in properties with above-ground cleanouts, the process may be more straightforward and less costly. However, if the sewer line is buried deep underground or located in hard-to-reach areas, additional equipment and labor may be required, increasing the overall expense.

4. Time of Service

The time of service can also influence the cost of sewer line cleaning. Emergency or after-hours services, typically required for urgent blockages or backups, may come at a premium rate compared to regular maintenance appointments during standard business hours. It is important to factor in these additional costs when considering sewer line cleaning services.

5. Service Provider

Not all sewer line cleaning service providers in Chicago offer the same pricing structure. It is crucial to research and compare different companies to find the most suitable option for your needs. Factors such as reputation, experience, and additional services provided should be considered alongside the cost to ensure a comprehensive evaluation.

a plumber performing a sewer line camera inspection in chicago.

In some cases, it may be necessary to perform a video inspection of the sewer lines to identify the cause of recurrent blockages or assess the overall condition of the pipes.

The Average Cost of Sewer Line Cleaning

While the cost of sewer line cleaning can vary based on the factors mentioned above, having a general understanding of the average costs can be helpful. On average, homeowners in Chicago can expect to pay between $150 and $500 for a standard sewer line cleaning.

It is important to note that this estimate is subject to change and may not include any additional services that might be required during the cleaning process. For example, if a blockage is too severe and cannot be resolved through cleaning alone, additional repairs or replacement of damaged sections may be necessary, leading to higher costs.

Additional Services and Costs

1. Sewer Video Inspection

In some cases, it may be necessary to perform a video inspection of the sewer lines to identify the cause of recurrent blockages or assess the overall condition of the pipes. This service can cost anywhere between $200 and $600, depending on the complexity of the inspection.

2. Hydro Jetting

Hydro jetting is a highly effective method of removing stubborn blockages and clearing debris from sewer lines. This service typically costs between $350 and $600, depending on the length and condition of the sewer line.

3. Repairs and Replacements

If the sewer line is damaged or severely worn out, repairs or even replacement may be necessary. The cost of repairs can range from a few hundred dollars for minor fixes to several thousand dollars for extensive replacements. It is important to speak with a professional plumber to assess the condition and recommend the most suitable solution.

In Summary

Understanding the cost of sewer line cleaning in Chicago is essential for homeowners and property managers. By considering the factors that affect the expenses and being aware of the average costs, individuals can make informed decisions when it comes to maintaining their plumbing systems. Regular maintenance and prompt attention to any blockages or issues can help prevent costly repairs and ensure the uninterrupted and efficient operation of the sewer lines in the city.

Unveiling the Warning Signs: When to Clean Sewage Lines in Commercial Buildings

clean sewage lines at a business in chicago.

Understanding the Importance of Clean Sewage Lines in Commercial Buildings

Commercial buildings are crucial in supporting various industries, accommodating businesses, and providing essential services to communities. As such, they require proper maintenance to ensure smooth operations and a sanitary environment. Among the critical aspects of maintenance is the cleanliness of sewage lines. Neglecting the cleanliness of these lines can lead to significant issues, ranging from unpleasant odors to health hazards and costly repairs.

By familiarizing ourselves with the warning signs that indicate the need to clean sewer lines in commercial buildings, we can take proactive measures to prevent potential problems. In this article, we will explore these warning signs and their significance, as well as the importance of regular maintenance for commercial building owners and administrators.

The Importance of Clean Sewage Lines in Commercial Buildings

1. Ensuring Proper Sanitation:

One of the primary reasons to clean sewage lines in commercial buildings is to maintain proper sanitation. Sewage lines transport wastewater, including human waste and other contaminants, away from the building. Over time, debris, grease, mineral deposits, and other substances accumulate in these lines, obstructing the flow and creating unhygienic conditions. Regular cleaning helps remove these obstructions and ensure the proper functioning of the sewage system, preventing potential contamination and health risks.

2. Preventing Unpleasant Odors:

A fouls smell emanating from restrooms or other areas of a commercial building can be a clear indication of clogged or dirty sewage lines. The accumulation of waste materials and other debris in the lines can generate unpleasant odors that permeate the building. Regular cleaning and maintenance help eliminate these odors, creating a more pleasant environment for employees, customers, and visitors.

3. Avoiding Costly Repairs:

Failure to clean sewage lines in a timely manner can lead to more significant problems, such as pipe blockages and sewage backups. These issues can cause water damage to the building’s structure, electrical systems, and other components, resulting in costly repairs. By investing in regular cleaning and maintenance, commercial building owners can save substantial amounts of money by preventing severe damages and the need for extensive repairs.

a woman smelling sewer odors at her job.

If a persistent foul odor is present in a commercial building, particularly around restrooms or drainage areas, it is likely a sign that the sewage lines require cleaning.

Warning Signs: When to Clean Sewage Lines in Commercial Buildings

1. Slow-Draining Fixtures:

If sinks, toilets, and other fixtures in a commercial building are draining slowly, it may be a sign of blockages in the sewage lines. Over time, debris and accumulated materials can hinder the flow of wastewater, causing fixtures to drain at a slower pace. It is important not to overlook this warning sign, as it can indicate the need for immediate cleaning to prevent more severe issues.

2. Unusual Gurgling Noises:

Strange gurgling noises coming from drains, especially when flushing toilets or using sinks, can indicate air pockets or blockages in the sewage lines. These noises occur when wastewater struggles to flow freely due to obstructions. Regular cleaning can help remove these obstructions, restoring the proper functioning of the sewage system and eliminating the unusual noises.

3. Foul Odors:

If a persistent foul odor is present in a commercial building, particularly around restrooms or drainage areas, it is likely a sign that the sewage lines require cleaning. The accumulation of waste materials, grease, and other substances creates a breeding ground for bacteria and emits unpleasant odors. Thorough cleaning of the sewage lines can help eliminate these odors and maintain a more pleasant environment.

4. Fluctuating Toilet Water Levels:

Observing inconsistent water levels in toilets within a commercial building can also indicate a need for sewer line cleaning. Blockages or clogs in the sewage lines can cause the water levels in toilets to fluctuate, resulting in toilet bowl overflow or incomplete flushing. To prevent toilets from becoming unusable and causing further issues, immediate cleaning is necessary.

5. Recurring Drain Clogs:

If a commercial building experiences frequent drain clogs, despite attempts to resolve them, it suggests an underlying issue with the sewage lines. Persistent clogs often indicate the presence of obstructions that accumulate over time and require professional cleaning to fully remove.

a commercial hydro jetting to help clean business drains.

By adhering to a regular cleaning schedule, owners can ensure the longevity and uninterrupted functionality of the sewage system.

Maintaining Clean Sewage Lines: A Proactive Approach

1. Regular Inspections:

To identify potential issues before they escalate, it is essential to conduct regular inspections of the sewage lines in commercial buildings. Professional plumbing services can perform thorough sewer camera inspections using specialized equipment to detect any blockages, cracks, or other abnormalities. Regular inspections help catch and address problems early on, preventing extensive damage and costly repairs.

2. Scheduled Cleaning and Maintenance:

Establishing a scheduled cleaning and maintenance routine for sewage lines is crucial for commercial building owners. Professional plumbers can utilize various methods such as high-powered hydro jetting, snaking, or using specialized cleaning agents to remove built-up debris, grease, and other obstructions from the lines. By adhering to a regular cleaning schedule, owners can ensure the longevity and uninterrupted functionality of the sewage system.

3. Employee Education:

Creating awareness among employees is an integral part of maintaining clean sewage lines in commercial buildings. Educate employees about proper waste disposal practices, encouraging them to avoid flushing non-biodegradable items and pouring greasy substances down the drains. By developing good habits among employees, the risk of blockages and sewage line issues can be significantly reduced.

Conclusion

Clean sewage lines are vital to the smooth operation and overall sanitation of commercial buildings. Neglecting the cleanliness of these lines can lead to persistent issues such as foul odors, slow-draining fixtures, and recurring clogs. By recognizing the warning signs and implementing proactive measures like regular inspections, scheduled cleaning, and employee education, commercial building owners can avoid costly repairs, maintain a hygienic environment, and ensure the uninterrupted functionality of their sewage systems.

Things You Should Know About Sewer Pipe Cleaning

a sewer pipe rodding being performed.

What is Sewer Pipe Cleaning?

Sewer pipe cleaning involves the elimination of clogs, blockages, and scale that can accumulate in any drain or sewer line over time. Sewer pipe cleaning can be done regularly to keep drain lines clean, or it can be done when clogs or blockages are found. If you are a homeowner, learning how to perform basic sewer pipe cleaning can save you time and money. It is also important to know what to do when sewer pipe cleaning is necessary.

How to Clean Sewer Pipes?

When it comes to cleaning your sewer pipes, it is best to start with basic preventive maintenance and avoid clogs and blockages. Taking steps such as using a plunger, augers, or chemical cleaners can help clear minor clogs and blockages. If these basic methods do not work, then calling a professional may be necessary. Professional plumbers use services such as hydro-jet drain cleaning, to clear blockages and can also inspect more serious blockages to determine the best method of repair.

When to Clean Sewer Pipes?

Most sewer pipe cleaning should be done on a regular basis. This helps to prevent the buildup of debris, hair, oil, food, and other substances that can cause clogs and blockages. It is important to regularly check your sewer pipes for any signs of blockage or damage, such as a foul odor, slow draining, or gurgling noises. If any of these signs are present, then sewer line cleaning should be performed.

hydro jet drain cleaning service.

The best form of sewer pipe cleaning is known as hydro-jetting.

Signs of a Clogged Sewer Pipe

Knowing the signs of a clogged sewer pipe can help you determine when sewer pipe cleaning is needed. Some common signs include:

  • Sinks, tubs, toilets, and other plumbing fixtures that are slow to drain or make gurgling noises.
  • A foul odor coming from drains.
  • Hearing the sound of running water even when no one is using any of the plumbing fixtures.
  • Standing water in sinks, tubs, or toilets.

If any of these signs are present, then it is important to schedule sewer line cleaning as soon as possible. If the clog is severe, then it may be necessary to call a local plumber.

What Can Cause a Clogged Sewer Pipe?

There are several things that can cause a clogged sewer pipe. These include:

  • Hair and soap residue buildup in drains.
  • Improper disposal of oil, fat, and grease in sinks and toilets.
  • Tree roots that have grown into sewer lines.
  • Foreign objects that have been flushed down a toilet.

It is important to be mindful of the potential causes of clogged sewer pipes and take preventive measures to avoid them.

tree root intrusion taking over a sewer pipe.

How to Prevent a Clogged Sewer Pipeline?

There are several steps that you can take to help prevent clogged sewer pipes. These include:

  • Installing mesh strainers in all drains in order to catch hair before it can enter the sewer lines.
  • Avoiding the disposal of grease, fat, and oil into sinks and toilets.
  • Performing regular sewer pipe cleaning to remove debris and other materials that can build up in the line.

Taking these steps can help you avoid a costly sewer clog.

Conclusion

Sewer and drain cleaning is an important part of home maintenance. Learning how to perform basic sewer line cleaning can help you stay ahead of blockages and clogs, and can help you save time and money. Knowing when to schedule sewer pipe cleaning, what causes a clogged sewer pipe, and how to prevent them is essential for any homeowner. Taking the steps necessary to prevent clogs and blockages keeps your sewer lines clean and functioning properly.

Sewer Back Up Causes and Quick Fixes

Sewer Back Up Causes and Quick Fixes

The sewer system is necessary for urban infrastructure because it helps maintain a healthy and safe environment. Carrying away wastewater helps keep the environment secure from flooding and helps stop the spread of water-borne diseases. Therefore, it could be troublesome if a sewer backup is in your home.   

The sewage system is a vital component of your commercial building since it is responsible for adequately disposing of wastewater away from the property. By strategically discarding waste, it is crucial to keep it well-maintained to avoid issues affecting its functionality. 

Although the primary function of a sewer is to circulate wastewater, a commercial system is complex and requires maintenance and professional services. Installing plastic access doors and panels will allow convenient access to these critical fixtures whenever there is a need for repairs and maintenance. 

But what are the common causes of backed-up sewers, and what can we do to fix and prevent it from happening again? Keep on reading to find out more!  

Cause #1 Clogs or Blockages  

Does your sink drain water slowly? Are there unfamiliar gurgling noises when you flush the toilet? These common signs could indicate clogged drains. Clogs mainly develop over time and are a product of a blockage that restricts the water flow from your drainpipes, impacting the plumbing throughout your entire home or establishment.   

Clogged drains can affect multiple fixtures such as sinks, toilets, showers, bathtubs, and sprinkler systems. Raw sewage could travel back into your drainpipes and your plumbing fixtures from the septic tank or the main sewer lines if the clogs become severe. The situation can get messy, and you would want to contact a plumber right away for professional hydro jetting service.

Drain clogs are usually a long process of material buildup in your drains. Here are some of the common materials that can clog your pipes: 

  • Hair  
  • Solidified grease  
  • Baby wipes and feminine hygiene products  
  • Extra-thick toilet paper, facial tissues, towels, and other wiping products.   
  • Dental floss and cotton swabs  
  • Products labeled non-flushable 

You can place a drain strainer in your bathroom drains or sinks to prevent materials from falling into your drainpipes to prevent clogs from occurring. Also, make sure to dispose of hygienic products properly and, as much as possible, minimize the amount of toilet paper that you flush down your toilet.  

Cause #2 Tree Roots  

Tree root invasion happens when trees roots penetrate your sewage lines, growing through your plumbing pipes or crawling around and crushing the lines, searching for the water that flows inside.  

The tree root invasion process is usually slow, but it could speed up if your lines are in bad condition, with holes or cracks that conveniently allow the roots to enter the drain. 

To prevent yourself from dealing with this situation, you should estimate the suitable area if you’re planning to plant a tree within your property. It will vary depending on the type of plant and its growth rate. Ensure that the site you choose will not interfere with your plumbing pipes.  

Cause #3 Main Sewer Line Blockage 

A blockage in your sewer system usually occurs in the main sewer line owned and maintained by your city. The sudden backup caused by a clog is similar to what you experience during a household blockage. It can also be due to insufficient design capacity if your area encounters serious growth.  

The problem becomes prominent if a community has difficulties with the sewers after heavy rainfall. The main sewer blockage will continuously affect your plumbing in the entire house or establishment, rather than affecting just one drain.   

To decrease the damage, once there is a block in your main sewer line, shut off all water supplies in your home or establishment and shield drain openings with material that can absorb the liquid.  

Final Thoughts 

Although these valuable tips are practical and helpful, you should immediately contact a professional sewer line cleaning service if nothing changes. There could potentially be a more severe cause for the blockage, which would require a possible sewer line repair or replacement. 

Why Hydro Jetting is Important Before a Sewer Line Repair

The sewer lines in your home are designed to last a long time. It is not uncommon to find fully functional sewer lines that are twenty years old and over. This is because sewer systems, due to the type of content that passes through them, are designed to be sturdy.

Why Hydro-Jetting is Important Before a Sewer Line Repair

However, even the most well built sewer line will eventually have problems. These issues can come from several sources. The sewer line in your home can get damaged because of misuse, warns Jilsa Management. Or it can lose some of its function through wear and tear or a natural accident.

Regardless of the origin of the issues in your sewer lines, you want to solve the problem and make sure it does not return. To get this result, you should know the best practice for fixing a damaged sewer line; the sewer line repair should be preceded by hydro-jetting.

What is hydro-jetting? What does it do? And why is hydro-jetting important during sewer line repair?

What Is hydro-jetting?

Hydro-jetting is a drain cleaning method that uses high-pressure water to blast away clogs and blockages inside the sewer lines. Water is delivered at a pressure of up to 6000 PSI, which is enough force to remove tree roots, sludge, and other materials lodged inside the pipes.

The process of hydro-jetting is as follows:

  1. As a first step, the plumber conducts a sewer camera inspection by installing a small camera on one end of a cable and inserting it into the sewer line.
  2. The camera travels through the sewer line and sends back images of the interior of the pipes to a computer screen monitored by the plumber.
  3. This initial process helps the plumber pinpoint the location of the problem and determine its severity. The inspection also tells the plumber if it is safe to go on with the next step.
  4. If it is safe to proceed – that is, there is no possibility of the sewer line collapsing – the actual hydro-jetting process can now begin.
  5. Hydro-jetting equipment consists of a large tank filled with water, a specialized high-pressure water hose, a super-strong nozzle, and equipment for pushing the water through the nozzle at high pressure.
  6. The high-pressure water hose, with the nozzle at its head, is inserted into the sewer line until it reaches the point of the blockage.
  7. The clog is blasted with just enough water pressure to break up the obstruction inside the pipe. Hydro-jetting can deliver enough water pressure to shear away plant roots.
  8. The dislodged material is washed down the pipe and into the city’s main sewer lines.
  9. Finally, another sewer camera inspection is done to view the results of the process and determine the condition of the pipes.

Hydro-jetting lets your plumber clear blockages inside the pipes without digging up the yard or exposing your pipes to the risk of damage. Hydro-jetting can be used to effectively remove the following kinds of blockage from a sewer line.

  • Sludge or grease, fat, and oil build: When you flush grease, fats, and oil into the drain, these materials cling to the sides of the pipes and trap dirt. A hydro jet will remove buildup.
  • Intruding tree roots:  In a bid to find water and nutrients, the roots of nearby shrubs or trees can find their way into the sewer line. Hydro-jetting will solve this problem.
  • Pipe scale: Dissolved minerals in hard water are deposited on the interior surface of pipes, where they reduce the diameter of the pipe. Hydro-jetting will remove pipe scale.
  • Non-flushable objects: A range of items we use in the home find their way into the sewer line. Hydro-jetting can blast away these troublesome items.

Hydro-jetting is a powerful yet gentle method for cleaning drains. But why is it necessary to carry out this procedure before a sewer line repair service?

hydro jetting a sewer line

Why hydro-jetting is done before sewer line repair

  • To detect problems: Hydro-jetting the sewer line washes away the layers of filth inside the sewer line and exposes the actual surface of the pipes. This allows the plumber to see the true extent of the damage to the sewer line.
  • Improves the accuracy of repairs: By combining sewer camera inspection with hydro-jetting, the plumber can pinpoint the location of a problem. Hydro-jetting injects a high level of accuracy into sewer repair. It ensures the finished job is well done and long- lasting.
  • Reduce costs: There are other ways to clean a sewer line before it is repaired, but hydro-jetting is the quickest and most-effective method. Other methods will cost more in labor and time.

Improves sanitation and indoor air quality: Hydro-jetting the sewer before repairing helps the plumber do a more complete job. Hydro-jetting gets rid of the bacteria inside the drain that cause bad odors. Unless the sewer line is cleaned with a hydro-jet, the bacteria inside them are not easily removed.