"Small flies are attracted to this odorous, decaying matter, so that biofilm building up in ... For every adult fly you kill, ...

Throw away garbage and take out recycling frequently. Clean out the bottom of bins when liquid accumulates, wipe down ...

They also have two wings (many insects have four ... "It may not be the food you are wanting to eat, but fruit flies are so tiny it only takes a tiny microhabitat" -- like the residual soda ...