Neutralizes ammonia on contact with urine. Absorbs up to 140% of its weight in liquid and will do so repeatedly. Has less than 1% free crystaline silica (non-carcenagenic). Coverage of up to 1,000 sq. ft (5-6 times greater than competitive products. Can be used on dirt, wood, concrete or metal trailers/cages. Safe with all animals, horses, dogs, rabbits, goats, emus, alpacas, etc.Size is 40 Pound. Dimensions are 26 X 17 X 6 Diatomaceous Earth & Montmorillonite Clay (Volcanic Ash). UPC Code = 058633001352