Humpbacked flies, also known as phorid flies, are common pests that thrive around decaying organic matter, making outdoor trash cans a prime target. Preventing these flies requires a combination of proper waste management and proactive measures. Here are the best ways to keep them away:

1. Use Tight-Sealing Lids: Ensure your trash cans have secure, tight-fitting lids to block flies from accessing waste.

2. Clean Bins Regularly: Rinse and scrub trash cans weekly with soapy water or a vinegar solution to remove residue and odors.

3. Dispose of Waste Frequently: Avoid letting garbage sit for too long—empty bins before they become overfilled.

4. Use Trash Liners: Double-bagging waste or using thick, durable liners helps contain odors and leaks.

5. Apply Natural Repellents: Sprinkle baking soda or essential oils like eucalyptus or peppermint inside bins to deter flies.

6. Keep Area Dry: Flies breed in moisture, so place trash cans in dry, shaded areas and ensure proper drainage.

7. Set Up Traps: Use fly traps or sticky strips near trash cans to catch adult flies before they reproduce.

By following these steps, you can significantly reduce the risk of humpbacked fly infestations and maintain a cleaner outdoor space.