Bugs and critters in your worm bin
A worm bin is a small ecosystem, not a sterile box. Many creatures move in, and most of them are helpers: they break down food alongside your worms. So before you reach for any spray (please don’t!), find out who your visitor is.
Tiny black beetles are usually harmless feather-wing beetles. Cockroaches look alarming but are no danger to the worms. Ants usually tell you the bin has become too dry. Mites usually mean too much food or a very wet bin. Snails mostly arrive as eggs with garden waste or food. Some visitors are real predators that hunt worms, such as centipedes. My predators page shows how to spot and remove them.
Below are all my articles on the bugs and critters that readers have sent me photos of over the years, with the fix that worked in my own bins.
START HERE
Want to know what’s normal? Read “Other worm farm inhabitants” first, then “Worm bin predators on the hunt“.
Seeing maggots or flies? They have their own page: Maggots & flies. My free Worm Bin Checklist helps you spot changes early, before a visitor turns into a problem.
