Ask Milo – Brown beetles in the crabitat

Alison asks:

I have small brown beetles in my crab cage. They are not on the crabs and they are not mites. They move very fast and hide under the bowls and there are dozens and dozens of them that come out at night to eat crab food. I suspect they may have hatched from some of my high-end crab food. Any ideas for getting rid of them short of dumping the entire sand/sphagnum substrate (very large cage with six inches of substrate…weighs about 75 pounds so hard to deal with.)

Hi Alison!

It’s difficult to know what kind of bugs you are dealing with without seeing a photo. We have a couple articles that might help:
Household mites and bugs

Guide to bugs you might find in your crabitat