Worms in Dog Poop: What to Do, Treatment & Prevention

Finding worms in your dog’s poop is unsettling — and it’s one of the most common calls a veterinarian gets. The good news is that most intestinal worms are treatable, and with the right steps, you can protect your dog, your family, and your home. This guide walks you through what to do, what to look for, and how to prevent reinfection, all backed by veterinary and public health sources.

Common types of worms in dog stool: 4 (hookworms, roundworms, whipworms, tapeworms) ·
U.S. dogs infected with intestinal parasites annually: estimated 34% (CDC data) ·
Zoonotic risk from dog worms to humans: yes, especially roundworms and hookworms (CDC) ·
Percentage of puppies born with roundworms: up to 90% (AVMA) ·
Recommended deworming frequency for adult dogs: every 3 months (most veterinary guidelines)

Five key facts, one pattern: the type of worm determines the treatment, the cleaning routine, and the risk to your family.

What to do if my dog’s poop has worms?

Collect a fresh stool sample

Grab a clean bag or container and pick up a small amount of fresh stool. The Antech Diagnostics (veterinary diagnostic lab) notes that a fecal exam is essential for accurate identification because treatment depends on the parasite type. Do not rely on visual inspection alone — many worms are microscopic.

Call your veterinarian for an appointment

Contact your vet the same day. Vetster (online vet service) advises that tapeworms are often detected by seeing egg segments, but other infections require microscopic testing. Do not attempt home treatment without a diagnosis.

Follow prescribed deworming medication

Your vet will prescribe a specific dewormer based on the worm type. Oakdale Veterinary Group (veterinary practice) describes 2 to 3 treatments for roundworm infections, depending on findings. Over-the-counter dewormers may not cover all worm types.

Administer preventive treatment afterward

After the initial course, start a monthly preventive. Most veterinary guidelines recommend deworming every 3 months for adult dogs. A follow-up fecal exam is recommended to confirm eradication, per Antech Diagnostics.

This process minimizes risk of reinfection and ensures your dog’s health is restored quickly.

Are worms in dog poop contagious to humans?

Roundworms and hookworms are zoonotic

Yes. VCA Hospitals (veterinary hospital network) confirms that roundworms and hookworms are among the most common canine intestinal worms with zoonotic potential. Human infection occurs through ingestion of eggs or larvae, or through direct skin contact with contaminated soil, according to Washington State University IACUC (research ethics body).

Hookworms cause cutaneous larva migrans

The CDC DPDx (U.S. public health agency) states that zoonotic hookworm infection is most commonly associated with Ancylostoma braziliense and Ancylostoma caninum. In humans, hookworms cause cutaneous larva migrans, per the Companion Animal Parasite Council (veterinary parasitology group).

Children are at higher risk

Because children play in soil and sandboxes, they are more likely to come into contact with contaminated feces. Antech Diagnostics warns that dog feces can contaminate yards, playgrounds, and sandboxes with infectious stages that persist in the environment.

Good hygiene prevents most transmission

Always wash hands after handling pet stool, even when using a bag or scooper, advises VCA Hospitals. The ESCCAP Worm Control in Dogs and Cats (European scientific body) states that zoonotic risk cannot be definitively ruled out, reinforcing the need for hygiene.

The implication: zoonotic risk is real but manageable with basic hygiene.

Do I need to treat my house if my dog has worms?

Clean up feces immediately

Yes, environmental decontamination is recommended for roundworms and hookworms. Vetster notes that roundworms, whipworms, and hookworms can spread through dog feces and contaminate the home. Pick up stool from the yard daily.

Disinfect food and water bowls

Wash bowls with hot soapy water. Bleach solutions can kill worm eggs on hard surfaces, but follow safety guidelines.

Wash dog bedding in hot water

Use hot water (at least 130°F) and detergent. Itch Pet (pet wellness brand) recommends vacuuming carpets and rugs and washing bedding in hot water.

Vacuum carpets and upholstery

Thorough vacuuming removes eggs that may have been shed. Discard the vacuum bag or clean the canister outside.

Flea control if tapeworms are present

Tapeworms require flea control because dogs acquire tapeworms by consuming fleas, per Vetster.

Consistent environmental management is as important as the medication itself.

What does poop look like in a dog that has worms?

Roundworms look like spaghetti strands

Roundworms are long, pale, and about 3–5 inches. They resemble spaghetti. Often they are passed whole in stool.

Tapeworm segments look like grains of rice

Tapeworm segments are small, flat, and white, resembling grains of rice. They may move in fresh stool. Vetster notes that tapeworms are often detected by seeing these segments.

Hookworms and whipworms are microscopic

Hookworms and whipworms are rarely visible to the naked eye. A fecal float test is needed for diagnosis.

Blood or mucus may accompany worm infestations

Some dogs pass blood or mucus in stool, especially with hookworm or whipworm infections.

Visual identification helps, but only a fecal test can rule out microscopic worms.

What naturally kills worms in dogs?

Pumpkin seeds (cucurbitacin)

Pumpkin seeds contain cucurbitacin, which may help expel tapeworms. However, Antech Diagnostics emphasizes that natural remedies are not proven to fully eliminate worm infestations. Most evidence is anecdotal.

Carrots and coconut

These provide fiber and some antiparasitic properties, but they are not a substitute for veterinary dewormers.

Diatomaceous earth (food-grade only)

Some owners use food-grade diatomaceous earth, but its efficacy in dogs is not well-studied. Always consult a vet before using.

Garlic (controversial)

Garlic can be toxic to dogs in high doses. VCA Hospitals advises against using garlic as a dewormer without veterinary guidance.

Natural remedies may offer comfort, but they cannot replace prescription dewormers for a complete cure.

What are the first signs of worms in dogs?

Visible worms in stool or vomit

This is the most obvious sign. Roundworms and tapeworm segments are often seen.

Pot-bellied appearance in puppies

Puppies with roundworms often develop a swollen belly. Up to 90% of puppies are born with roundworms, according to the AVMA.

Weight loss despite normal appetite

Worms steal nutrients, causing weight loss even when the dog eats well.

Anal scooting or licking

Scooting can indicate tapeworm segments or anal irritation. Vetster notes that tapeworm segments cause itching.

Dull coat and lethargy

A heavy worm burden can make a dog lethargic and give its coat a rough appearance.

Routine fecal exams catch silent infestations before they cause symptoms.

Can I let my dog lick me if he has worms?

Risk of oral transmission is low

The CDC DPDx states that the primary route of human infection is fecal–oral or skin contact, not licking. The risk from a dog’s lick is minimal compared to handling feces.

Avoid licking around mouth and open wounds

If your dog has groomed its anal area, its saliva may carry eggs. Washington State University IACUC notes that eggs can be present on fur after defecation.

Good hygiene is sufficient

Wash your hands after handling your dog or cleaning up feces. VCA Hospitals advises that simple handwashing is the most effective preventive measure.

The catch: even though licking risk is low, maintaining hygiene is still essential during treatment.

Six worm types, one pattern: each has a distinct appearance, zoonotic risk, and treatment approach.

Step-by-step treatment plan for worms in dog poop

1. Day 1-2: Collect a fresh stool sample and call your vet. Do not delay — some worms reproduce quickly.
2. Day 3-5: Visit the vet for a fecal float test and first deworming dose. Expect a follow-up dose in 2-3 weeks.
3. Week 2-3: Administer the second dose if prescribed. Begin cleaning your home: wash bedding, vacuum, and disinfect hard surfaces.
4. Week 4-6: Return to the vet for a follow-up fecal test to confirm clearance. Antech Diagnostics recommends this step.
5. Ongoing: Start a monthly preventive dewormer. Schedule routine fecal checks 1–2 times per year.

Finding worms in your dog’s poop is a clear signal to act — but it’s also a manageable problem. The combination of a vet diagnosis, a full deworming course, and consistent home cleanup will break the cycle. For dog owners in the U.S., the choice is clear: invest in a fecal test and preventive medication, or risk a stubborn infestation that puts your family and pets at unnecessary risk.