It's always pretty warm in here, but she's on top of the fridge, so basically on top of the freezer. There's also a window nearby. 77F air seems fine (that's what it's hangin tough at) *edit* 72F not 77F. but there was no place for her to go to get a little extra warmth. I just enlarged her vent holes on lid with a scissor blade, sliced myself up on the plastic, but I hope this helps with ventilation and less condensation. Worked for my roaches. She's back in her burrow now, on the side without heat mat.