Hens go broody when you don’t want them to… and won’t go broody when you do. 
i buy inexpensive indoor/outdoor carpet the width of my nesting boxes and cut to fit, my boxes r wood, easy to take out and clean or thow away and repeat. have also used placemats from $tree and cut to fit, very inexpensive. empoyee at home depot always wonders why i only buy a foot of carpet!
