Inkys idea is good, you could also get a big plant like shleffara or ficus, and get him to climb out onto a stick and u can set him on the plant while you clean his cage.
Yea, you can get them from outside, just put them in the bathtub and pour a pot of boiling water on them or use a 50/50 solution of bleach and water, just make sure to rinse them off well if you use the bleach method. Oh, you can also bake them in the oven at 350F for about an hour. (It doesent...
And i would only use my "design" if you are keeping them outside, if you decide to keep them inside just put them in your closet or somewhere else dark, they dont need heat inside if your house is heated.
Im not taking care of chams anymore, but i do still lurk around here sometimes, thought id help u out, i breed superworms for my bearded dragon and i use one of those small fridges that can be set to warm/cold, i set mine to warm and fill empty pill bottles halfway with flukers cricket gutload...
I will never use a cleaner crew again.. All mine grew into beetles and escaped the tub and flew around the house forever, and i still find them.. Just letting the poop fall to the bottom and cleaning it every few weeks works fine for me.