That's why i use a clear container, they can't climb those. I just put it in the closet to keep it dark and it's a bit warmer on the top shelf in there.
I was going to say maybe I've got some S-L-O-W roaches but they are nowhere close to climbing the walls of this container. They furiously keep trying tho, got to give them credit!
I may have to try the closet idea but boy that's gonna be a lot work cleaning off shelf space in there. Lol