I have a brooder that I have used to raise up chicks for a long time. Recently, I hatched out some chicks who later became sick and died. The sickness was obviously contagious since they all got it. My question is how do I sterilize the brooder (it's a shipping crate) so that I can be completely sure the germs are gone. I'm buying new chicks next month and don't want a repeat of this traumatic event. I have never lost chicks before and so having a 100% hatch rate only to have a 100% death rate was a bit hard. Thanks in advance!