P2O5 content : 18% Moisture content : 5-6%; size: 2-4 mm Our granulated guano is derived from stoned bat guano, which is carefully collected and contains a high percentage of phosphorus materials. This nutrient-rich composition benefits the soil food web, promoting healthy plant growth. By replacing synthetic chemical fertilizers, bat guano serves as an environmentally friendly alternative that contributes positively to the overall health of the environment.