Hi All, I have 13 BO hens and 1 Bo Rooster. They are about 6 months old. I made a dust bath and put it in the chicken pen for the ladies to dust bathe in. Well instead of bathing in it they are eating it. I have play sand and DE in the bath, no chemicals or anything. Is it okay for them to eat the dust bath? Will they figure it out that it is for bathing and not a treat?? Thanks.