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Schedule OnlineUpdated August 2026 by Dr. Mike Wesselink, DVM
Kittens need a strict deworming schedule because many are exposed to roundworms (Toxocara cati) through the mother’s milk. A single dose kills only the adult worms present at that moment; new larvae continue to mature in waves over the following weeks. The Companion Animal Parasite Council therefore recommends starting anthelmintic treatment at 2 weeks of age and repeating every 2 weeks until a monthly broad-spectrum preventive can begin.
At The Pet Advocate Vet in Tracy we follow that guidance closely. We deworm every kitten with pyrantel at each vaccine visit and offer our $12 walk-in deworming Monday through Friday from 12 to 3 p.m. for owners who need to catch up. This page gives the full age-based timeline, the clinical reasons the repeats matter, the signs to watch for, and the exact protocol used at the clinic.
Many kittens acquire roundworms (Toxocara cati) through the mother’s milk. Hookworms can travel the same route or from the environment. A single dose kills only the adult worms present at that moment. New larvae continue to mature in waves over the following weeks, so treatment must be repeated on a tight schedule to break the cycle.
Without that early, repeated treatment the parasite load can grow large enough to cause diarrhea, poor growth, anemia, or even death in severe cases. At The Pet Advocate Vet we see this pattern regularly in new kittens that arrive without a clear deworming history.
Roundworms and hookworms are also zoonotic. Children who play in contaminated soil or sand can become infected. Consistent deworming protects both the kitten and the family.
In our high-volume Tracy clinic we treat every new kitten as if it already carries GI parasites. The life cycle of one of the common worms passes through the mother’s milk. That assumption drives the deworming cadence at The Pet Advocate Vet and keeps us from waiting for symptoms that may never show until the load is high. The same visits that cover pet vaccinations are the practical place to keep the schedule on track.
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The Companion Animal Parasite Council and AAHA/AAFP Feline Life Stage Guidelines align on the same core rhythm for kittens. Because prenatal infection does not occur with Toxocara cati the way it does in dogs, many clinics begin at 3 weeks. CAPC still lists the start at 2 weeks to cover early hookworm risk.
CAPC also recommends fecal examinations at least four times during the first year of life. A negative fecal does not mean the schedule can stop. Many kittens still carry migrating larvae that are not yet shedding eggs.
If your kitten is already 8 weeks or older when you bring it home, start the schedule immediately and work with your veterinarian to catch up. Breeders and rescues often begin the early doses. Ask for the records so the remaining doses can be timed correctly. At The Pet Advocate Vet the early deworming pairs naturally with the kitten vaccine schedule we follow at the clinic.
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Roundworms (Toxocara cati) are the most frequent. They are transmitted through milk and the environment. Heavy loads produce the classic pot-bellied appearance in kittens.
Hookworms (Ancylostoma) attach to the intestinal wall and feed on blood. Kittens can become anemic quickly if the burden is high.
Tapeworms (often Dipylidium caninum) arrive when a cat grooms and swallows a flea that carries the larval stage. Visible rice-grain segments near the tail or in the litter box are the usual sign. Treatment requires a different dewormer such as praziquantel.
Other parasites appear less often but still matter. Coccidia and Giardia can cause diarrhea and require different treatment. A fecal exam identifies which organisms are present so treatment can be targeted when needed. More detail on these organisms is available in the Merck Veterinary Manual.
At The Pet Advocate Vet we see the highest rates of roundworms in the youngest kittens, especially those from rescues or outdoor queens. That is why the early, repeated doses matter more than waiting for a positive fecal.
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Many infected kittens and adult cats show no obvious signs until the load is high. Watch for these common indicators:
Any of these signs warrants a veterinary visit and fecal testing rather than guessing at home. Some kittens pass worms after the first dose of pyrantel. That is expected and means the product is working. At The Pet Advocate Vet in Tracy we treat the signs as confirmation that the CAPC-aligned biweekly schedule was needed.
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In our Tracy clinic at The Pet Advocate Vet we treat every new kitten as if it already carries intestinal parasites. That assumption comes from the high rate of maternal transmission we see in practice, especially among rescue and feral-origin kittens.
We administer pyrantel at every vaccine appointment, which usually begins around 8 weeks of age. The combination of FVRCP vaccine plus pyrantel is straightforward and keeps the schedule practical. If the kitten is already on a heartworm or broad-spectrum preventive that includes an intestinal dewormer such as Revolution Plus, the separate pyrantel dose can often be dropped.
Owners who need additional doses or who missed the early schedule can walk in Monday through Friday from 12 to 3 p.m. for deworming alone. The price is $12. No appointment is required. See our current prices for the full list of pet vaccinations and wellness services.
For tapeworms we give praziquantel by injection at least once during the kitten series, usually at the final visit, or any time visible segments appear. This is especially important in the Central Valley where fleas remain active much of the year.
Fecal exams are available when indicated. CAPC recommends four in the first year. We discuss the timing at the first visit and continue as needed, especially if the kitten scavenges or has diarrhea.
This approach keeps the schedule practical for busy families while staying aligned with national guidelines. The same visit often covers the next vaccine booster, so owners do not have to make extra trips. You can schedule your appointment online or simply walk in during the 12–3 window.
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Once the intensive every-two-weeks phase ends, most cats move onto a monthly heartworm preventive that also controls intestinal worms. Year-round monthly prevention is the preferred path in California because mosquito activity and environmental parasite pressure never fully disappear.
CAPC and the AAHA/AAFP Feline Life Stage Guidelines recommend year-round broad-spectrum parasite control for every cat, including strictly indoor ones. Fleas, mosquitoes, and the occasional mouse find their way indoors. Even indoor cats benefit from the same protective approach we discuss in our guide on do indoor cats need vaccines.
If a monthly product is not used, treat adult cats at least four times a year with a broad-spectrum anthelmintic and perform fecal exams at least twice a year. Higher-risk cats need more frequent attention:
At The Pet Advocate Vet the same first-year window is also when we schedule the rest of the kitten plan: the remaining vaccine boosters, rabies, microchip, and spay or neuter between 4 and 6 months for most cats. The full timeline is laid out in our new kitten checklist. You can also schedule your appointment for the later visits once the early schedule is complete.
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Roundworms and hookworms can infect people, especially children. Roundworm eggs can cause visceral or ocular larva migrans. Hookworm larvae can penetrate skin and produce cutaneous larva migrans. More information on these risks is available from the Cornell Feline Health Center.
Simple habits reduce the risk:
Consistent deworming of the cat is the most effective way to lower environmental contamination. The CAPC emphasizes control of parasites with zoonotic potential for exactly this reason. You can read the full CAPC general guidelines for the latest recommendations.
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CAPC recommends starting at 2 weeks of age and repeating every 2 weeks until a monthly broad-spectrum preventive begins. Many clinics begin at 3 weeks because prenatal infection does not occur with the main feline roundworm. If your kitten is already older when it comes home, start the schedule at the first veterinary visit and catch up from there.
Year-round monthly broad-spectrum prevention is preferred for every cat. If that is not used, treat at least four times a year and run fecal exams at least twice a year. Outdoor cats, hunters, and households with young children often need monthly attention.
Yes. Most exposure occurs before the kitten ever leaves the breeder or rescue, through the mother. Indoor living does not eliminate the need for the early schedule or ongoing prevention. Fleas and mice still find their way inside.
Yes. Pyrantel and similar products paralyze the worms so they are passed in the stool. Seeing dead or dying worms for a day or two after treatment is expected and does not mean the product failed.
Walk-in deworming at The Pet Advocate Vet is $12. When combined with a vaccine visit the pyrantel is included in the typical visit total. There is no exam fee for walk-in wellness services. Current vaccine and wellness prices are listed on our prices and rates page.
Yes. Roundworms and hookworms are zoonotic. Children are at highest risk. Daily litter-box scooping, hand washing, and keeping the cat on schedule are the practical protections.
Begin deworming at the first visit, perform a fecal exam if possible, and then move onto the monthly schedule. Ask the breeder or rescue for any prior deworming records so doses are not duplicated unnecessarily.
If your kitten still needs early doses or you want to start the vaccine-plus-deworming series at The Pet Advocate Vet, walk-in hours run Monday through Friday from 12 to 3 p.m. No appointment is required. You can also review current prices and book a full first visit through our pet vaccinations page.
Fully protected kittens recover more smoothly from later spay or neuter, so many owners complete the early schedule first. The complete first-year timeline, including vaccines, deworming, socialization, and spay timing, is in our new kitten checklist.
We serve the Tracy location and the surrounding Central Valley and East Bay communities including Lathrop, Manteca, Stockton, Antioch, and Brentwood. Directions and local pages are available under areas we serve.