Hi all, Before the huge winter coldness and snow strikes our area I have purchased a couple of heat pads for my bunnies which I plan to use in their bed compartment. I have a hutch cover which remains closed all day and night at the top of the Hutch only (Not the bottom run) as it is very cold and windy these days. Will the heat pads be Ok to use in the top hutch section with the plastic cover down at night. Sorry if it seems like a silly question I just don't want to cause any issues inside the hutch where it may become too hot. Thanks!