The Pampered Chicken Mama Breatheright Nesting and Coop Herbs for Pet Chickens is a proprietary herb blend made specifically to improve dusty coops and create a great smelling area for your flock. Use the nesting herbs daily or 2 to 3 days a week, making sure to change the bedding in the nesting boxes immediately if it becomes soiled or wet. The coop herbs improve the air quality of the nests to promote healthy growth and eggs.