Yeah, I use CHE's for my box turtles. I guess I'm gonna go ahead and try out one of the heaters with a built in thermostat from Wal-Mart, I already have a metal shelf suspended from the ceiling in their shed so I won't have a problem finding a safe place to put it where they can't get to it. Its worth a try since its about 1/4 of the price of the mat I want to order, if it doesn't work out I'll just return it and order one of the Kane heat mats.