Will my dwarf hamster escape the playpen?

i want to leave him out as long as possible but i cant be looking after it all day.. my biggest worry is that it will escape while im looking away.. what if i cover the top with a cardboard box? blanket?


Making the area dark would just encourage him to go to sleep, not to be active. However leaving him for long amounts of time in an open area without hides could stress him out. I don’t suggest leaving him in there all day. I would stay with him as it is social interaction he needs, not to be left alone for hours at a time. He already gets that when you put him in his cage.