Zeolites are micro-porous, hydrated alumino silicate minerals. It is organically certified, stable and non-toxic. Zeolite feed additive acts as a reservoir and a slow release mechanism for the nitrogen. This allows you to feed more NPN (Non-Protein Nitrogen). It has strong affinity for ammonia, thus, provides superior odour control and a healthy environment. Also protects the penetration of ammonia into the bloodstream.