These are my favorite roaches! They are SO dang cute! I had trouble with mine escaping over a thick layer of vaseline. Now I have a 2 inch THIN coating of vaseline around the top of a ten gallon aquarium and they aren't able to navigate over the thin coating. Just in case I also have a fabric cover under the metal aquarium lid. I also put foam tape all the way around the inside of the lid. So far, so good. When it gets cold I might have more issues but the fabric covering will still keep them from getting all the way out.
I held one once for a few seconds. It was cool til he realized "Oh crap this thing is alive" and he panicked and jumped off I just get a big kick out of their busy, busy days in the tank. . .