Brand New Unopened bottle of D-Worm Round Warm dewormer for cats/dogs * Contains piperazine to remove roundworms * Provides a high margin of safety for even kittens and puppies * Easy to use -- just mix with food This product is effective for those roundworm stages found in the intestine and does not remove migrating larval stages. Animals should be checked periodically by a veterinarian for the presence of other intestinal parasites. Consult a veterinarian before using in severely debilitated animals. Do not worm animals more than twice yearly except as advised by a veterinarian. Avoid freezing.