You might want to look into B. Bolivenus. I just got 100 to start a colony and I'm very pleased. I feed the nymphs to my baby scorplings. They don't stink, climb or fly. Adults are 1.5 inches, but the little nymphs are only 1/4" which would work. Plus Dave Grimm is absolutely great to deal with. I ordered 100 and got a lot more and he included a lot of adults which got my colony off to a great start. I can't say enough good things about him if you need a great roach supplier.