View Small Flies In Bathroom Images. How to get rid of tiny drain flies in your bathroom, shower, or kitchen sink area. Drain flies are small—measuring an eighth of an inch, which is about the size of a fruit fly or a gnat (it's easy to confuse them, as a matter of fact).
I have seen these flies in two instances before. First was at my parents house where a sewer pipe cracked leading out from the bathroom. The only flies that get in through bathroom fans are typically the larger species.
Thousands of these in bathroom and bedroom.
Top best drain fly killers. Shower pans are prone to leaking and the area under. The only flies that get in through bathroom fans are typically the larger species. We use it every single day to maintain health and hygiene, plus get ready every morning.