Most tapeworms are not directly passed from pet to pet, but require an intermediate host. Common intermediate hosts include fleas and small rodents. Pets will become re-infested with tapeworms if these hosts are not controlled. Dogs become infected with roundworms by eating worm eggs from contaminated soil or stool, or by eating infected rodents. Hookworms are contracted by ingestion of microscopic larval by mouth or from larval entry through skin, usually on the feet.
Natural Remedies and Preventative Measures:
You can crush a small clove of garlic and add it to their food.
Pumpkin Seeds have a natural de-worming ability.
Apple Cider Vinegar, when added to their food, can also aid de-worming.
Coconut Oil is also known for its de-worming qualities.