Many bird species find it important to take regular dust baths as part of their daily preening routine. Now you can promote and enhance this natural, important behavior with Fresh Coop Dust Bath.Our Dust Bath has been formulated to be the perfect granulation of food grade diatomaceous earth (fossilized diatoms) and calcium montmorillonite (rich clay derived from volcanic ash) that absorbs excess oils, helping to keep your flock's feathers clean and in top condition.