Tested and approved by Sir Squeak himself!

Technically this is meant for a a reptile habitat, but it is also the perfect heater for the drafty rat home. Stick it on on outside wall or bottom of tank style habitat to give nesting babies some extra cozy warmth. Also good for adults in drafty areas. It won't get super hot, just cozy warm, but of course, test it with your individual tank / cage setup first to make sure it you won't be toasting the little buggers or singeing any plastic.