TheraPet Cats Refills
“Many ‘problem’ behaviors in pets stem from fear or stress. TheraPet helps reduce anxiety and promotes calm, improving overall well-being in both dogs and cats.”
Lauren A. RVT
Board Certified VET
1 refill pack for your diffuser
Each refill = 30 days
30 days guarantee
Free Shipping Over $40
Endorsed By VETs & Behaviorists
How it Works
Setup is quick—after that, TheraPet runs on autopilot.
- Pick an open outlet in your cat’s favourite room
- Twist the refill vial into the diffuser until snug
- Plug in and leave running; replace the vial every 30 days for continuous calm
Unique Formula
A proprietary 2-in-1 pheromone blend you won’t find in any other diffuser.
- Combines two feline pheromone signals for broader calming effect
- Delivered in a plant-based carrier—no added fragrance or alcohol
- Heat-controlled diffuser ensures steady, even release for 30 days per refill
Why Subscribe?
Keep the calm constant and spend less while you’re at it.
- Save on every automatic refill
- A fresh vial ships right as the previous one empties
- Pause or cancel anytime
TheraPet Helps With
Hiding & Fear
Furniture Scratching
Tension & Aggression
Loved by 1M+ Happy Customers
Our three cats were always fighting. A month with this diffuser and they are calm and peaceful.
Much less fighting, scratching and bullying between my three cats. We can’t live without the refills.
TheraPet stopped the stress accidents and our cat is finally calm.
How to use TheraPet?
Plug In & Relax
Twist in a fresh vial and plug the diffuser into an open outlet.
Keep It Upright
Leave it upright and running continuously; replace the vial every 30 days.
Half the Price, Double Calming Effect
Lasts for 60 days
Long-lasting continuous calming support.
30 Day Money-back Guarantee
Try TheraPet at home with confidence.
Vet-trusted Formula
Species-specific pheromone support without sedation.
Trusted By 1M+ Pet Parents
Over two million diffusers sold with an under 1% return rate.
What to expect
Continuous use recommended. Individual results may vary.*
MONTH 1-3
Stress Eases
Fighting and hissing decrease, with fewer accidents and less stress scratching.
MONTH 3-6
Harmony Builds
Cats begin to share space comfortably and show more positive interactions.
6+ MONTHS
Calm & Balanced
Cats stay relaxed and adjust more easily to routine changes and new pets.
Over 2 Million TheraPet MD Diffusers Sold Nationwide
Less than 1% returned—pet parents love the results.
🐱 Cat-Parent Claims
Observed their cat was somewhat calmer within two weeks¹
Saw a noticeable easing of tension between cats in multi-cat homes¹
Reported a noticeable decrease in unwanted behaviors such as pee¹
¹Based on an online survey of 416 customers who used the product for at least 14 days. Results may vary.
Real Homes, Real Results
Hear how cats are settling with TheraPet
Zero Puddles
Cuts stress-peeing
Less Spraying & Odors
Calmer, cleaner cat homes
Stop the Mess
Reduce indoor marking with ease
30 Days Money back Guarantee
Your TheraPet order is backed by our 30-day satisfaction guarantee. Try it at home, and if you don’t see a positive change in your cat, we’ll refund you in full—no questions asked.
FREQUENTLY ASKED QUESTIONS
How long will it take to see results?
Most people notice a difference within a month, but results vary depending on the cat and stress level.
Where should I use the diffuser?
Use it in the rooms where your cats spend most of their time, away from windows, doors and air vents.
Will other pets or people be affected?
No. The pheromones are species-specific and do not affect dogs, other animals or humans.
Should I unplug the diffuser at night?
Keep it plugged in continuously for consistent calming support.
How often should I replace the refill?
Replace the refill vial every 30 days or when the liquid runs out.