Have you seen little flies in your bathroom or kitchen — even when the windows and doors are shut and there's no way for them to get inside? Those little flies you're spotting very well could be drain flies, also sometimes referred to as sewer flies, which are simply small flies that are attracted to water and moisture. Here is a look at what you need to know about drain flies and why they could mean you need a residential plumber for help in your home.
Drain flies tend to show up around stagnant water.
Stagnant water is what attracts drain flies, which is why they are most common around sewage lines and sewer systems. If you are finding these flies in your bathroom or coming out of the drain in your kitchen sink, there is water in there somewhere that the flies are attracted to. In a lot of cases, an unforeseen drainage issue will be causing the problem, but the flies can also be attracted to something like water leaking on the floor that is landing in a puddle.
Drain flies usually do not go away on their own.
You can ignore the flies as long as you want, but they will not normally go away on their own. In fact, the problem will likely get a lot worse the longer it is allowed to linger. These small flies multiply at a rapid rate, so they can show up in droves in a very short time period, much like regular houseflies can. It is far better to bring in a plumber who can track down the source of the population within your plumbing system so you can get rid of the problem.
Drain flies aren't harmful but they can be a nuisance.
It is a common misconception that drain flies are harmful to humans, but really they are just a nuisance to have around. The flies are not known to carry diseases or bother humans, other than individuals who may be allergic to them. Because the flies can multiply so quickly, they can all but take over an entire room if the problem is allowed to go on. They can make their way into other parts of the house as well.
Overall, drain flies are not something that any homeowner will welcome. If you have a problem with these pests reach out to a residential plumbing service for help.