How to do it:
Use a DIY prevention method by pouring a mixture of baking soda, vinegar, and hot water down your drains weekly.

Result:

• Cleans organic buildup in pipes
• Reduces breeding sites for drain flies
• Minimizes drain fly population
• Prevents flies from contaminating goods

Problem:
This method may fail if there is a severe infestation or if organic matter remains in hard-to-reach areas, allowing drain flies to persist.

How to do it:
Pour a mixture of equal parts baking soda, vinegar, and hot water down the drain at night. Cover the drain with a plug or cloth to trap the reaction inside. Repeat every few days for best results.

Result:
This method helps break down organic matter and kills drain fly larvae, reducing their population and preventing them from damaging your goods.

Problem:
If the infestation is severe or the source is not fully cleaned, drain flies may persist despite repeated treatments.

How to do it:
Physically remove drain flies and block their entry points to protect your goods.

Result:

• Use a vacuum to remove visible flies.
• Clean drains and surrounding areas thoroughly.
• Seal cracks and gaps near drains with caulk.
• Install fine mesh screens over drain openings.
• Regularly inspect and maintain barriers.

Problem:
This method may fail if hidden breeding sites remain or if barriers are not properly maintained, allowing flies to return.

How to do it:
Use beneficial nematodes, a biological control, to target drain fly larvae in drains.

Result:

• Purchase beneficial nematodes (Steinernema feltiae) online or at garden stores.
• Mix nematodes with water as per instructions.
• Pour the solution down infested drains.
• Repeat weekly for best results.
• Nematodes attack and kill drain fly larvae, reducing their population.

Problem:
This method may fail if drains are too dry, too hot, or if chemical cleaners kill the nematodes before they reach the larvae.

How to do it:
Mix equal parts of baking soda, vinegar, and hot water. Pour the mixture down the affected drains at night. Let it sit overnight, then flush with boiling water in the morning. Repeat weekly.

Result:
This method kills larvae and removes organic buildup, reducing drain fly populations and preventing damage to goods.

Problem:
If the infestation is severe or pipes are heavily clogged, the method may not reach all breeding sites, allowing flies to persist.