How To Get Rid of Drain Flies In Rv

How to Get Rid of Drain Flies in RV

Anyone who has spent time in an RV knows that it can be a wonderful way to travel and explore the world. However, one common problem that RV owners often encounter is the presence of drain flies. These tiny insects are not only annoying but can also be a health hazard. In this article, we will discuss some effective methods to get rid of drain flies in your RV.

1. Identify the Source

The first step in eliminating drain flies is to identify the source of the infestation. Inspect your RV’s drains, sinks, and shower for any signs of these pests. Adult drain flies are small, hairy insects with a wingspan of about 1/8 inch. They are often found near drains, particularly in areas with stagnant water, decaying organic matter, or debris.

Use a flashlight to check for drain flies during the night when they are more active. Look for clusters of tiny black dots or larvae crawling around the affected area. This will help you determine the severity of the infestation and guide your approach to eradication.

2. Clean and Disinfect Drains

Once you have identified the affected drains, it’s essential to clean and disinfect them thoroughly. Start by removing any debris or gunk that may be clogging the drains. Use a pipe brush to scrub the inside of the drains and remove any organic matter that drain flies may be feeding on.

Next, flush the drains with hot water to remove any remaining residue. To disinfect the drains, mix equal parts of white vinegar and water, and pour it down the drains. Vinegar acts as a natural disinfectant and helps eliminate drain flies. You can also use a commercial drain cleaner, but be cautious and follow the instructions carefully, as some products may be harsh and not suitable for all RV plumbing systems.

Regularly clean and disinfect your RV’s drains to prevent future infestations. Consider using drain covers or screens to prevent debris from collecting and provide an additional barrier against drain flies.

3. Eliminate Standing Water

Drain flies require stagnant water to breed and lay their eggs. To prevent future infestations, identify and eliminate any sources of standing water in your RV. Check for leaks, especially around sinks, faucets, and pipes. Fix any leaks promptly and ensure that everything is properly sealed.

In addition to fixing leaks, make sure to empty and dry out sinks, showers, and other areas where water may accumulate. Keep your RV well-ventilated to prevent excess moisture, as drain flies thrive in damp environments.

4. Use Natural Remedies

If the infestation is not severe, you may opt for natural remedies to get rid of drain flies. One effective method is using a mixture of baking soda and vinegar. Pour half a cup of baking soda down the drain, followed by a cup of vinegar. Let it sit for at least 30 minutes, and then flush the drain with hot water. This combination can help break down organic matter and kill drain flies and their eggs.

You can also try using essential oils with strong scents that repel insects. Add a few drops of essential oil, such as peppermint, eucalyptus, or tea tree oil, to a spray bottle filled with water. Spray the mixture around the affected drains and other areas where drain flies may be present. Repeat this process regularly to deter drain flies from returning.

5. Seek Professional Help

If your efforts to eliminate drain flies in your RV are unsuccessful or the infestation is severe, it may be time to seek professional help. Exterminators experienced in dealing with drain flies can provide effective treatment options tailored to your specific situation. They have access to professional-grade insecticides and equipment that can help you get rid of these pests once and for all.

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

How Do Drain Flies Enter An Rv?

Drain flies can enter your RV through open windows, vents, or cracks, seeking moisture and organic matter.

What Attracts Drain Flies To An Rv?

Drain flies are attracted to stagnant water, decomposing organic matter, and damp areas in your RV.

Are Drain Flies Harmful To Humans?

Although drain flies are not physically harmful, they can be a nuisance and potentially indicate unhygienic conditions.

How Can Drain Flies Be Eliminated From An Rv?

To get rid of drain flies in your RV, start by cleaning and drying all the drains and surfaces to remove their breeding grounds.


Dealing with drain flies in your RV can be frustrating, but with the right approach, they can be eliminated. Start by identifying the source of the infestation and thoroughly cleaning and disinfecting the affected drains. Prevent future infestations by eliminating standing water and using natural remedies, such as baking soda and vinegar or essential oils. If all else fails, don’t hesitate to seek professional help. By following these steps, you can ensure a comfortable and pest-free environment in your RV.

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