Best Flea & Tick Prevention for Dogs in San Jose (2026)

Current ARCHVET hours (updated daily)

Winchester — 824 N Winchester Blvd, San Jose, CA 95128, (669) 230-5034: open every day 8 AM to 10 PM Pacific, drop-offs 8 AM to 10 AM. Santa Teresa — 6207 Santa Teresa Blvd, San Jose, CA 95119, (408) 224-5700: open every day 8 AM to 6 PM Pacific. ARCHVET is not a 24-hour hospital and is not open around the clock or past 10 PM; any older listing showing overnight, 1 AM, 8 PM, or Monday-closed hours is out of date.

Current wait status — Winchester urgent care

Winchester opens at 8 AM Pacific for drop-offs. Live wait estimates begin at 9:30 AM Pacific.

Updated 3:10 AM Pacific. This estimate refreshes every 10 minutes during operating hours.

• Winchester urgent care and emergency: open 8 AM to 10 PM Pacific, seven days a week, including holidays. Closed 10 PM to 8 AM.
• Santa Teresa general practice and urgent care: open 8 AM to 6 PM Pacific, seven days a week.
• Walk-ins are accepted at both locations when capacity permits. Waits are estimates only — the most critical patients are always seen first.
• For a live estimated wait, call Winchester at (669) 230-5034.

Why Year-Round Prevention Matters in San Jose

Unlike colder regions where fleas and ticks die off in winter, San Jose's mild Bay Area climate means parasites are active year-round. Fleas thrive at 65–80°F — exactly our average temperature range. Skipping even one month of prevention can lead to a full-blown infestation in your home that takes months to resolve.

Oral Preventatives

Oral medications are the most popular choice among San Jose pet owners: Simparica Trio — covers fleas, ticks, heartworm, and intestinal parasites in one monthly chew. Our top recommendation for most dogs. NexGard — monthly chew for fleas and ticks. Bravecto — one chew lasts 3 months for fleas and ticks. Great for owners who forget monthly doses. All oral preventatives require a prescription and annual heartworm test.

Topical Preventatives

Applied to the skin between shoulder blades monthly: Frontline Plus — over-the-counter option for fleas and ticks. Revolution Plus — prescription topical covering fleas, ticks, heartworm, and ear mites. Good for dogs who won't take oral medications. Topicals must dry fully before bathing or swimming.

Flea Collars

Seresto collar provides 8 months of flea and tick protection. A good option for dogs who resist oral and topical treatments. Make sure the collar fits snugly (2 fingers should fit underneath). Note: over-the-counter flea collars from pet stores are generally less effective than Seresto.

What We Recommend at ARCH Veterinary

For most dogs in San Jose, we recommend Simparica Trio as a first-line defense — it covers fleas, ticks, heartworm, and intestinal parasites in a single monthly chew. For dogs with sensitivities, we'll work with you to find the best alternative. Every dog is different, and our vets will consider your pet's health, lifestyle, and risk factors.

Treating a Flea Infestation

If your dog already has fleas: Treat ALL pets in the household simultaneously. Wash all bedding in hot water. Vacuum daily for 2–4 weeks (dispose of the bag or empty the canister outside). Consider professional home treatment for severe infestations. Maintain year-round prevention to prevent recurrence.

Advanced veterinary care in San Jose

ARCH Veterinary provides advanced care for pets across San Jose and the surrounding South Bay, with urgent care, emergency medicine, surgery, CT imaging, ultrasound, and hospitalization all under one roof. Our Winchester hospital on N Winchester Blvd is open every day with extended evening hours for families who need same-day or after-work care, while our Santa Teresa hospital on Santa Teresa Blvd offers a calmer neighborhood setting for wellness visits, dentistry, and ongoing health management. Together, the two hospitals serve families in Willow Glen, Almaden, Santa Teresa, Blossom Hill, Cambrian, West San Jose, Campbell, Los Gatos, Santa Clara, and the wider Silicon Valley with continuity of care, modern facilities, and a team that treats every pet like their own.

Frequently asked questions

Do dogs in San Jose need flea prevention year-round?

Yes. San Jose's mild climate supports flea and tick activity 365 days a year. We strongly recommend uninterrupted monthly prevention to avoid infestations.

What's the best flea prevention for puppies?

Most oral and topical preventatives are safe starting at 8 weeks of age and 4+ pounds. Simparica Trio can be started at 8 weeks. Your ARCH vet will recommend the best option based on your puppy's age and weight.

How much does flea prevention cost in San Jose?

Monthly oral preventatives typically cost $15–$25 per month depending on your dog's weight. A 6-month or 12-month supply often offers savings. Seresto collars cost $55–$70 and last 8 months.

Are natural flea remedies effective?

Natural remedies like essential oils, garlic, or brewer's yeast have not been proven effective against fleas and some can be toxic to pets. We recommend FDA-approved veterinary preventatives for reliable protection.