About Sentry
SENTRY is a pet behavior and wellness brand that grew up inside Sergeant's Pet Care Products, a company with a pet health heritage dating back to 1868, and was later part of Perrigo's animal health division alongside the PetArmor and Sergeant's names. In 2019, Perrigo sold its animal health business, including SENTRY, to PetIQ for 185 million dollars, and SENTRY has operated under PetIQ since. The brand's calming line, sprays, portable diffusers, collars, and chews, is built around a patented pheromone technology designed to mimic the neonatal pheromone a mother cat releases to calm her kittens.
SENTRY describes more than a decade of work with pet behavior experts and university researchers to develop and test that pheromone-based approach, and the line now spans multiple formats so an owner can pick a delivery method that fits the situation: a diffuser for a room, a collar for at-home stress, a spray for a carrier, or an oral chew for on-the-go dosing. In our own testing, the SENTRY Calming Chews for Cats, Pheromone Stress Aid earned a place among our top picks for cat calming treats, the only chew in that roundup to pair an oral calming ingredient with a pheromone analogue rather than relying on amino acids or melatonin alone.
Brand website: sentrypetcare.com
What Sentry makes
Sentry's range runs wider than the products we review. The lines we know best from our own testing are marked with a star:
Calming Chews
oral soft chews pairing a calming blend with a pheromone analogue — featured on House of Mittens
Calming Diffuser Kits
plug-in diffusers releasing pheromone passively for up to 30 days
Calming Collars
wearable collars emitting a pheromone that mimics the maternal cue
Calming Sprays
pheromone sprays for carriers, bedding, and travel
Flea & Tick (Fiproguard, PurrScriptions Plus)
topical and shampoo flea and tick treatments for cats
Why we recognized Sentry
The House of Mittens Top Brand recognition isn't paid for and can't be applied for. We award it to the brands whose products consistently stand out in our vet-reviewed category guides. Sentry earned it on the strength of the products below, evaluated the same way every product on this site is: assessed against feline-health criteria, used with real cats, and judged on merit.
Sentry products we rated highly
Sentry Calming Chews for Cats, Pheromone Stress Aid, 4 oz
One of our top picks in our cat calming treats reviews. It is the only chew in that roundup pairing an oral calming ingredient with a pheromone analogue, a genuinely different mechanism from the amino-acid and melatonin chews it competes against, and it carries one of the stronger score-and-volume combinations we found: a 4.2-star average across more than four thousand ratings. The chews are small and soft, which makes them workable for cats with poor teeth that leave firmer chews untouched, and the price makes it easy to keep a spare bag on hand for unplanned stress like building work or a houseguest.
Read the 10 Best Cat Calming Treats of 2026, Vet-Reviewed guide →What earned Sentry the recognition
- SENTRY Calming Chews is a top pick in our cat calming treats reviews, the only chew in that roundup combining an oral calming blend with a pheromone analogue.
- The chew holds a 4.2-star average across more than four thousand customer ratings, one of the stronger score-and-volume combinations in the category.
- SENTRY's pheromone technology is built to mimic the neonatal pheromone a mother cat releases to calm her kittens, and the brand describes over a decade of work with behavior experts and university researchers developing it.
- The calming line spans multiple delivery formats, sprays, diffusers, collars, and chews, so an owner can match the format to the situation.
- SENTRY carries a pet-care heritage dating back to Sergeant's Pet Care Products' 1868 founding and has operated under PetIQ since 2019.