How to Get Rid of Gnats and Drain Flies in Your Bathroom Sinks

Gnats and drain flies are common nuisances found in bathroom sinks, and if you’ve noticed them buzzing around, you’re not alone. These pests are attracted to moisture and damp areas, which are often present in sinks that haven’t been used in a while. The combination of accumulated hair, debris, and stagnant water in the drain creates the perfect breeding environment for these pesky insects. Fortunately, there are simple steps you can take to eliminate them and prevent future infestations.

Why Are Gnats and Drain Flies in My Bathroom Sink?

Gnats and drain flies thrive in damp, stagnant areas—especially where there’s an accumulation of organic material. Bathroom sinks, especially those that are seldom used, often have hair, soap scum, toothpaste residue, and other debris that provide a perfect breeding ground. When water sits stagnant in the drain, it creates the ideal environment for these pests to lay their eggs.

How to Eliminate Gnats and Drain Flies in Your Sink

  1. Pour White Vinegar Down the Drain
    One of the easiest and most effective methods for getting rid of gnats and drain flies is to pour white vinegar down the drain. The acidity of the vinegar helps kill the larvae and clean out any buildup in the pipes. After letting it sit for about 30 minutes, flush the drain with hot water to rinse away any remaining debris.

  2. Use Store-Bought Products
    If you prefer a more targeted approach, visit your local home and garden store for products specifically designed to eliminate drain flies and gnats. Many of these products contain natural enzymes or chemicals that break down organic matter in the drain and kill the pests. Be sure to follow the instructions on the label for the best results.

  3. Keep Your Drains Clean and Dry
    To prevent gnats and drain flies from returning, keep your drains clean and free of debris. You can also run water in your drains regularly, especially in sinks that are not frequently used. This will help prevent any stagnant water from forming and keep the pipes functioning properly.

How Home Watch Services Can Help

At Home Watch USA, we understand the importance of maintaining your home’s condition, even when you’re away. As part of our professional home watch services, we always run water in each drain during our house checks. This simple but essential task helps to replenish the water traps, ensuring that they remain functional and preventing unwanted pests from breeding in stagnant water.

By including this routine check during our visits, we also help identify any visible water leaks, which could lead to further damage or attract more pests. Whether you’re away for a short trip or for an extended period, our home watch service keeps your property in top condition, giving you peace of mind.


Why Choose Home Watch USA?

If you’re planning on leaving your property vacant, our comprehensive home watch services are the perfect solution to help ensure your home stays in great shape. From running water in drains to checking for visible leaks and maintaining your home’s condition, we take care of the details so you don’t have to worry about pests like gnats and drain flies.


By following these simple tips and taking advantage of our professional services, you can help ensure your bathroom stays pest-free, clean, and in optimal condition. Contact us today to learn more about our home watch services and how we can help protect your home while you’re away.