They do not bite ... drain fly larvae are incredibly small and, usually, they are deep within the pipes. But if multiple duct-tape tests fail, you can open your drain cover, remove any gunk ...

The British Pest Control Association (BPCA) identifies these insects as small, dark-winged gnats which don't bite but develop ... and kill the eggs, larvae and any adult flies".

A Museum fly expert explains what is going on. Often large, persistent and painful, a bite from a horsefly is an experience unlikely to be forgotten ... but many species lay their eggs on plants ...

An curved arrow pointing right. At an insect farm in Kenya, fly larvae are being used to combat food waste. It's part of the InsectiPro farm's mission to chip away at the 1,900 tons of organic ...