This reduces the palatability of pellets and leads to smelly, wet feces. In addition, it improves the texture of the granules.
Ordinary pellets pulverize into dust, significantly adding to wastage.
Most people feeding pellets must still provide oil seeds to keep weight on some species. The hard, compact granules do not break or pulverize when used in gravity feeders, minimizing labour costs. No need to feed labour intensive soft foods with additional costly vitamin supplements.