So I have some roaches namely B. Dubia, G. Portentosa, P. Surinamensis, N. Cinerea and recently some B.Lateralis. So heres the thing i set them up in a bin. I underestimated the distance between the egg crates and the lid w/c has decent size holes.(1" in diameter). So some roaches jumped out through the holes in the lid. So I found a lot of roaches around my rack and a couple fell down my P. Transvaalicus Tanks and became a mid night snack. And I had to spend 30 mins inside the room chasing down those roaches. Damn they are fast and live up to their name. Red Runners. these are really the flash of the roach world.