Gnats they are about 4 mm long delicate dark colored flies with long legs and antennae.
Little flies in bathroom sink.
Drain flies they are about 1 5 to 5 mm long with a light gray or tan body.
Also known as moth flies sewer flies and filter flies they are gray or taupe in color with small rounded wings.
Why drain flies like your bathroom.
With kitchen drains bathroom drains sinks and grease traps restaurants are a drain fly s paradise.
Commonly known as drain flies these pesky creatures lay their eggs in the gunk that builds up in the pipes.
Measuring in at just 2 to 5 millimeters about one eighth of an inch drain flies are pesky insects that tend to congregate around standing water.
While there is some variation surrounding what insects constitutes gnats for our purposes we will address only those small flies that are non biters and are likely to be pests within homes and other structures.
Specifically you re likely to spot drain flies near sinks and showers that are stagnant for a time like after a long vacation or used very infrequently such as a guest bathroom.
Adult drain flies love to feed and breed in slow moving or clogged drains.
The gnats most likely to occur in sinks and sink drains include fruit flies moth flies and to a lesser degree phorid flies.
Finding a swarm of small gnat like creatures flying out of your sink overflow hole can be unsettling.
Drain flies are a nuisance and the problem only gets worse if they re not taken care of.
Fruit flies they are dull yellowish or brownish black in color.
House flies they are gray in color about 4 to 8 mm long with four dark gray stripes on upper body.
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.
They routinely show up in kitchen or bathrooms where they lay eggs in the gelatinous organic slime that can develop in sink drains.
Before you can rid your home of drain flies you need to identify the affected drains.
If you ve been noticing small flies buzzing around the drains in your kitchen or bathroom you may have a drain fly infestation.
But in commercial settings particularly those that serve food it becomes even more important to keep drain flies under control.
These flies are most commonly found in areas where there is standing water which is why they are usually found in your bathtub toilet drain and sink.
Commercial restaurants are a haven for sewer flies.