What type of brooder box do you have? For the past 2 years we have been using cardboard boxes and when they get soiled, every couple days, we switch them out and burn them. Could also spread it out on the garden for compost or put in compost pile. Most grocery and hardware stores will give you boxes for free if you just ask. We also built a permanent brooder box out of scrap wood & hardware cloth for our broody hen & chicks she hatched out.