I read a few posts about people putting their chicks out into the garage or other chilly night time spot with a brooder light for heat. What I'd like to ad to that thought is how do you guarantee that the light will either not burn out or get broken or other power interruption issue and freeze your chicks? The reason I mention this is that I happened to have two lights over my little guys in a back bedroom and was happy that they were in fact in the house as one of the lightbulbs in the brooder lamps I had burned out and if the chicks had been outside I'd have had chicksicles this morning. I also had a time that the power cord got pulled out of the socket (by a dog stepping over it) just enough that the light went out. Please always have two lights or check regularly or something to make sure that your heat sources are on and working! Don't just assume that because you turn a light on over them in the evening that it's going to stay that way all night.