My husband and I recently purchased a puppy from a farm. Last night I noticed something white in his stool. My husband informed me that the dog had worms. I called my vet to try to ge the dog in there sooner because of the issue. The office is closed on the weekends. So I went out and bought Hartz Rid Worm Liquid. It does not tell me how often I should give it to him until we can get to the vet. Does anyone know? If so please help me.