If any of you have major pet stores near, I know they aint cheap but it will make those hovabators stay where you want them to. Its called a hygro-therm controller, made by zoomed. Its whati used in my coolerbator and what is now controlling my ultrabator (see link in my sig). They run aboout 90 bucks, but with all some of you have invested in eggs it would be money well spent.