Hi, I've started a roach colony after buying three tubs of various sizes from the pet shop. I've got them in a large plastic tub with lid and bugbed, one side humid and the other side on top of a heatmat. The trouble is, they keep scaling the walls of the tub and I'm finding adult roaches in various places in my house. I was told they were dubias, but surely the big advantage of dubias is they can't climb?? I've tried smearing vaseline inside the tub, which stops them climbing for about a day. I really don't want a roach infestation in my house!