When you suspect you have drain or fruit flies in your house, follow these tips!
Every summer, as it gets hotter and humid, drain flies become a big issue in almost every house, every restaurant, and every food processing business. Drain flies like to hatch their eggs in the drain and feed on the scum and bacteria that has collected in the drains. A good way to control these flies is to hit them at that source in the drains.
Controlling drain flies can start with a home owner by having Boric acid and treating the drains with it. Please wear protection such as masks and gloves when handling any chemicals. Another good way is to use bio-foam that eats bacteria and scum that's in the drains. Thus removing the drain fly's food source. Another way is to regularly clean the drains in intervals of at least once a week with a bucket of scolding hot water and two caps of Clorox. And slow pour the buckets into the drains. Please don't use the product as not intended.
If you repeat these steps during the summer months, you will begin to see drain fly activity decrease when you attack them at their reproductive source.
And a bonus tip, cover all fruits and vegetables and keep your house clean.