I just don't. Not only is my coop really not equipped for one and chicks, I just don't trust them to do the job when I need chicks. With sanitizing my eggs, I never have any explode. I've even forgotten the bag of quitters/clears I removed on lockdown on the basement counter for two weeks, and none even smelled. I don't think there's anything *wrong* with using broodies, it's just not for me. At least not at this stage.