For Dogs. Do Not Use for Cats - Does your dog’s urine yellow your lawn? GrassSaver wafers contain healthy ingredients that help to diminish those yellow spots when fed to your dog on a daily basis. Helpful Instructions: Water yellow spots heavily for two weeks. Once your pet has been fed GrassSaver Wafers for two weeks, reseed all yellow spots. For animal use only. Keep out of reach of children and pets. An accidental overdose may cause vomiting, disorientation or unsteady, uncoordinated walking. In case of an overdose, contact a veterinarian immediately.