Being cautious with any heat source is a good idea -- in fact, I recall reading a warning not to use heat mats on plastic. However, I have myself never had a problem with heat mats on plastic. In my experience, they don't give off enough heat to do any damage....I was thinking the heat mat, like one of the ones that sticks on the glass of a normal t encloser but i wasnt sure if it would melt the rubbermade container?...
Do they mind the light?I keep all my roaches in a closet with a 100w light bulb. Regular light bulbs put off a lot of heat, and are cheap.
If you do a little quick math, you will see that running a 100w bulb as your heat source is not so cheap. A foot of 3" FlexWatt heat tape is fine for a large roach tub. Costs about $6 including wire clips... and uses 10w. That's a big difference in wattage.I keep all my roaches in a closet with a 100w light bulb. Regular light bulbs put off a lot of heat, and are cheap.