The AntsCanada Ant Forum's

I have what i think is a solanopsis invicta colony, and i want to give them a natural dirt nest, but i don't know what i should do for soil. I don't want to use soil from outside, but I've heard potting soil was bad. Help please? She has thirty workers in a test tube set up and its getting difficult to feed them. (They are amazing, but they scare the crap out of me. I don't wanna get bit anymore!)

I like using coconut fiber, since the organic acids help to maintain a relatively sanitary nest environment. You can find it cheaply at pet stores, used as substrate for crabs and amphibians.

Hm, what's bad about potting mix? I'd honestly like to know.