Drain flies, also known as sewer gnats, are a common nuisance around outdoor trash cans. These pests thrive in moist, decaying organic matter, making unmaintained bins a perfect breeding ground. To prevent infestations, follow these proven methods:

1. Regular Cleaning: Wash trash cans weekly with a mixture of hot water and dish soap or vinegar to remove residue and odors that attract flies.

2. Secure Lids: Use tightly sealed lids to block access and reduce moisture buildup inside the bin.

3. Dry Waste Before Disposal: Drain liquids from food scraps or bottles before tossing them to minimize dampness.

4. Use Liners and Baking Soda: Line bins with garbage bags and sprinkle baking soda to absorb odors and deter flies.

5. Natural Repellents: Place citrus peels, lavender sachets, or essential oils near the trash to repel flies naturally.

6. Pest Traps: Set up sticky traps or apple cider vinegar traps nearby to catch adult flies.

By maintaining cleanliness and reducing moisture, you can effectively keep drain flies away from outdoor trash cans. Consistent prevention is key to avoiding larger infestations.