Roots Organics Nitro Bat Guano is a premium product that will encourage vigorous plant growth. This fast acting formula is an excellent source of nitrogen, phosphorus and calcium. Ingredients have been sourced for quality and harvested with habitat friendly methods. Next, Roots Organics carefully processes and sifts the Bat Guano to make it easy to work with. This product contains 100% naturally occurring Bat Guano. No additives. No filler. Quantity: 3 lbs.