on topic - dogfood ako kay complete na ug niagi na sa scientific and laboratory calibration of dietary requirement sa dogs and usa sad naay quality control.
but giving sawdust once in a while wont harm based sa ako experience. esp. if nahan ko pa-bulk up the fastest time a particular dog... very high on fats man gud sya and as they say, too much of everything is harmful, so dili jud nako pirmanentehon hatag ug sawdust.