Please be careful putting chicks in a brooder with a single wire floor. I had chicks on a 1/2 hardware cloth floor a few years ago after about a month i went out to feed one morning and found that something had eaten the toes off some of the chicks. The only thing i could figure was that rats had climbed the legs of the brooder and hung upside down to do the dastardly deed. After putting in a double floor about 1" apart no more problem. I will never use a single floor again.