The question is, what kind of flies are they? Drain flies (also known as moth, filter, or sewage flies) and fruit flies (also called pomace or vinegar flies) are some of the most common culprits.
First, Rogers recommends a little bug identification. Determine whether your pests are fruit flies vs. drain flies or fungus gnats. The latter two pests require a different approach than for fruit ...
If you've ever seen a pesky bug circling your sink and shower, you're probably already familiar with a drain fly. These pests may be small (only one-sixth of an inch), but the tiny bugs are hard to ...