I have a colony of Dermestid Beetles that i keep in a large Blue Sterilite Plastic Container indoors. I am thinking about buying a reptile heater to use instead of keeping my room heated so high, around 75 degrees for the bugs. Just got our latest heat bill. Ouch ! My question is : Is it safe to put a pet heater on the bottom of the container or will it get to hot and cause a fire?