How To Get Rid Of Sewer Flies In Rv

How to Get Rid of Sewer Flies in RV


Sewer flies, also known as drain or sink flies, can be a common issue for RV owners. These small, bothersome insects tend to thrive and reproduce in moist environments such as sewer lines, drain pipes, and RV tanks. Not only can they be a nuisance, but they can also spread bacteria and become a health hazard if left untreated. In this article, we will discuss effective methods to get rid of sewer flies in your RV.

Identifying Sewer Flies

Before jumping into the solutions, it is crucial to correctly identify the pest. Sewer flies are small, about 1/8 inch in size, and often have a fuzzy or hairy appearance. They are usually gray or black, with long antennae and wings that are covered in tiny hairs. These flies can be found near drains, sinks, toilets, and areas connected to the sewage system in your RV.

Prevention Measures

Preventing sewer flies from infesting your RV is the best approach. Here are some preventive measures you can take:

  • Keep Everything Clean and Dry: Regularly clean and dry out drains, sinks, and toilets to remove any organic matter or residue that can attract sewer flies.
  • Fix Leaks and Seal Cracks: Inspect your RV for any leaks or cracks that might be a breeding ground for sewer flies. Fix them promptly to prevent moisture buildup.
  • Use Drain Traps: Install drain traps or screens in all your RV drains to prevent flies from entering the pipes.
  • Empty and Clean RV Tanks: Regularly empty and clean your RV tanks to prevent the buildup of organic matter that can attract sewer flies.

Treating Infestations

If you already have an infestation of sewer flies in your RV, don’t worry. There are effective measures to eliminate them:

1. Boiling Water

Pouring boiling water down drains can help kill sewer flies and larvae. Repeat this process daily for a few days to ensure complete eradication.

2. Vinegar And Baking Soda

Mix equal parts of vinegar and baking soda to create a foaming solution. Pour it down the drains and let it sit for a few hours. Rinse with boiling water to remove any remaining flies or larvae.

3. Bleach

Dilute bleach with water and pour it down infested drains. This powerful disinfectant can kill sewer flies and eliminate any existing organic matter that might attract them.

4. Drain Cleaning Products

There are various drain cleaning products available in the market specifically designed to kill sewer flies and remove their breeding grounds. Follow the instructions on the product for effective results.

5. Professional Help

If the infestation persists despite your efforts, consider seeking professional pest control services. They have the knowledge, experience, and tools to effectively eliminate sewer flies from your RV.

Frequently Asked Questions Of How To Get Rid Of Sewer Flies In Rv

How Do Sewer Flies Get Into My Rv?

Sewer flies can enter your RV through open windows, vents, or cracks in the walls.

What Are The Signs Of Sewer Fly Infestation?

Signs of sewer fly infestation include seeing small flies near drains or sewage areas and noticing a foul odor.

Why Are Sewer Flies Attracted To My Rv?

Sewer flies are attracted to the moist and organic matter found in RV sewage systems.

How Can I Prevent Sewer Flies From Entering My Rv?

To prevent sewer flies, keep windows and vents closed, seal any cracks, and regularly clean and treat your RV sewage system.


Sewer flies can be a frustrating problem for RV owners, but with the right preventive measures and treatment methods, you can get rid of them and enjoy a fly-free environment in your RV. Remember to keep everything clean and dry, fix any leaks or cracks, use drain traps, and regularly clean the RV tanks. If infestation occurs, try using boiling water, vinegar and baking soda, bleach, or drain cleaning products. If all else fails, don’t hesitate to seek professional help. By following these steps, you can ensure a fly-free and enjoyable RV experience!

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