As part of Humane Society Silicon Valley’s (HSSV) mission to save and enhance lives, we offer Trap-Neuter-Return (TNR) services for anyone caring for community cats. The program includes spay or neuter surgery, FVRCP (feline distemper combo) and rabies vaccines, internal/external parasite treatment, an ear tip, and optional microchip or FeLV/ FIV combo testing. Given the high demand for community cat surgeries, we can only accommodate scheduled appointments.

Making an Appointment

Our Community Cat Spay/Neuter Clinic is open by appointment only! Please make 1 appointment per cat, and due to high demand in the community, limit to 4 appointments per week. Contact our Medical Center for assistance if additional appointments are needed. Community Cat appointments are limited to community cats only, which are unowned cats that live outdoors and are not socialized to people.

If you have a cat in the City of Sunnyvale that you know is not owned and is need of TNR services, please contact the City of Sunnyvale Animal Control Services at (408) 730-7178 for help with city resources.

Request an Appointment


  • Free for felines trapped in Santa Clara County.
  • $150 per feline trapped outside of Santa Clara County.

Additional Services


Wellness Exam – $150


Combo Test (FeLV/FIV) – $60


Flea Preventative Treatment – Free

We use Frontline Gold & Ivermectin flea control products which also treats ear mites, intestinal worms (except tapeworms), and prevents heartworms.

HomeAgain Microchip (includes registration) – Free

The microchip is registered for the life of the cat. If a cat in your colony is found and turned in to a shelter, and the cat has a registered microchip, you will be notified so the cat gets back to its colony.


Prices of services subject to change without notice.


Medical Center Location & Contact

901 Ames Ave
Milpitas, CA 95035
Phone: 408-262-2133 x108
View hours


Learn more about Community Cats


Milpitas Community Cat Program

June 2021: Our Milpitas Community Cat Program is currently on hold, please check back for updates!

HSSV has launched the Milpitas Community Cat Program (MCCP) – a targeted TNR clinic aimed at helping at least 400 cats from Milpitas. We need your help to make it possible! If you want to get involved in the program or know of any Milpitas outdoor cats that need to be fixed, email us at to connect with our MCCP Coordinator!

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