These NaturVet GrassSaver Soft Chews are for dogs only, so don't give them to your cats. The recommended daily dosage is based on your dog's weight: 1 chew for dogs up to 10 lbs, 2 chews for 11 - 20 lbs, 3 chews for 21 - 50 lbs, 4 chews for 51 - 80 lbs, and 5 chews for 81 lbs and over. If your dog is on a prescription diet or has a metabolic disease like liver or kidney problems, talk to your vet before using. Make sure to feed only the recommended amount to avoid issues from too much methionine. Water the yellow spots on your lawn well for two weeks. Once your dog has been taking the chews for two weeks, go ahead and reseed the yellow areas. These chews are an easy and tasty way to keep your dog's urinary system healthy and your lawn looking great.