In this tutorial, we learn how to remove fruit flies from a home. If you have a heavy infestation of these flies, you will need to use PT 565 aerosols. Spray the aerosol for around 15 seconds in the spot that the flies are harboring. Open up cabinets so the product can get inside through the air. Then, move to other rooms and fog these with the spray to make sure you get all areas. Leave the area for a few hours to let the spray set in, then use drain gel which will clear out the flies from the scum on the inside of the drain. After this, your infestation should be cleared out.