I had the same concern. That's why I bought and installed a new smoke detector. The one that was in the same room with them was about due for replacement anyway.Firstly...do I leave the brooder lamp on 24/7? I'm a bit leery of having it on overnight while I'm upstairs sleeping. The set up is in our kitchen with the rabbit and ratties (large kitchen, away from all food, counters, stove, etc!). It's a large cardboard box, straw, and brooder lamp...