

And as long as these guys are not headed into his home he can just ignore the larvae and let them be on their way. Fungus gnat larvae are completely harmless to humans and pets. They can usually be found in compost bins when the matter inside has been left for a significant amount of time to rot.įungus gnat larvae will form this ‘snake’ when they migrate, and it is not very uncommon to spot one, so our reader need not worry about this. These are the youngest form of the fungus gnat, which is a species of fly that, like most species of flies, feeds on rotting organic matter, as do their larvae. Clearly, this is not an actual snake, but it is a horde of fungus gnat larvae. What our reader found on his rug is what is referred to as a ‘fungus gnat snake’. “I found them on an outdoor rug in the morning in Northern Virginia.

“What the heck is this?” asks this reader in his submission regarding the long line of worm-like creatures crawling on top of each other in the picture below.
