How early should I start deworming a puppy?

Standard recommendations begin puppy deworming at 2 weeks of age, then every 2 weeks until 8 weeks, and monthly thereafter until 6 months old. This early start is important because puppies can be infected before birth and through their mother's milk. Your vet will confirm the best products and schedule for your puppy.

Can I use over-the-counter dewormers instead of seeing a vet?

Over-the-counter dewormers are available, but they typically cover only a limited range of parasites -- often only roundworms and hookworms, and not all species. Without a fecal test to know what parasites are present, it's easy to miss others. Prescription dewormers often have broader or more targeted activity. A vet visit and fecal test is the most reliable approach, especially for puppies, kittens, or pets showing symptoms.

Do heartworm preventives also deworm for intestinal parasites?

Many monthly heartworm preventive products for dogs include ingredients that also control roundworms and hookworms. Some products also address whipworms. However, none of the standard heartworm preventives reliably cover tapeworms, which require separate treatment. Check the label of your specific product, or ask your vet what parasite coverage it provides.

Can I catch worms from my dog or cat?

Several intestinal parasites of pets are zoonotic -- they can infect humans. Roundworms and hookworms are the most notable, with children being at higher risk through contact with contaminated soil or accidental ingestion of eggs. Good hygiene (washing hands after handling pets or cleaning litter boxes, picking up pet waste promptly, keeping sandboxes covered) reduces risk alongside keeping pets on a regular parasite control program.

My indoor cat has never been outside -- do they need deworming?

Indoor cats have genuinely lower risk, but not zero risk. Parasites can enter the home on shoes and clothing; fleas (which transmit tapeworms) can be brought in from outside; and rodents entering the home represent another exposure route. A conversation with your vet about your cat's actual risk level and what routine monitoring makes sense is more useful than a blanket assumption that an indoor cat is completely safe.

Deworming Schedule for Dogs and Cats | PetCalculator

Intestinal parasites are more common than most owners realize -- even in indoor pets. Here is an overview of typical deworming schedules for puppies, kittens, and adult dogs and cats.