I think you will have trouble collecting manure from tractors. Dew and rain will likely get the pellets falling apart. But, try it and let us know what happens.I'm wondering and don't even need to know yet, but I intend to keep my buns in tractors, or at least the grow-outs. What do ya'll think about raking up the poo when I move the tractors? Will it be possible to collect it from the grass once they've eaten it down?