As Spring approaches, worms are growing in grass all around you. It's time to worm your puppy. Tips and tricks include- knowing your medication. Fenbendazole is the primary ingredient in most wormers for dogs, goats and horses. The dried and powdered form sold for dogs is often the most expensive. You can use other kinds, if you know the dosages. Ask your local vet for the most affordable options of the best mini goldendoodle puppy wormer for you!