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★ ★ ★ ★ ★ 4.7 stars
Join 20,000+ Others Living Allergen-Free With Pacagen
Every time my daughter would come visit our home, our 2 cats would make her sneeze. I tried the Pacagen spray on all the areas the cats like to lay (rugs, couch, chairs, etc.) and after only a few times, she said she felt much better. No more sneezing! I'm a believer!!
- K. Thousand
We had a person stay over for 3 nights in our house with 2 Siamese cats. She is highly allergic to cats. Not a sniffle, sneeze, itchy eyes. NOTHING! Miraculous.
- K. Simons
I have seen a noticeable difference with my allergies! I have been sneezing so much less. I had to go off my allergy meds for ten days and Pacagen was a life saver during that time.
- C. William
Thanks to this spray I was able to have my friend over who previously couldn't visit without severely watery eyes. Now she can comfortably sit on my couch in the same room as my cat!
- K. Shaw
My grandchild and son-in-law, both of whom are allergic to cats and are always uncomfortable in our house even with taking medication, spent ten days in our house with NO symptoms and without their meds. I sprayed before they arrived and every other day while they were here and never heard a sneeze or saw a teary eye.
- A. Cohen
Recently adopted two kittens despite my allergies. After a few itchy weeks, we started Pacagen, and I noticed a difference within a couple weeks. We will be continuing!
- K. Smith
I have 2 cats that I love, but one of them gives me allergies, and between seasonal and cat allergies I was dying, sneezing, coughing and swollen eyes :( but after a few weeks using this product my life has changed, no more sneezing and overall no more red, swollen eyes.
- C. Martinez
My husband's coughing and sneezing has greatly improved!!!
- J. Toscano
I am using the spray and the food topper to ensure effectiveness because my husband, who is allergic to our cat does like to take any medication. It has relieved his allergies (mostly coughing) almost completely!
- A. Clark
You can hot mop your hard surfaces which helps but I was losing to the soft surfaces. Pacagen made a huge difference. It actually works. I love my cats. Pacagen has relieved quite a bit of allergies and stress. I don't worry about what to do if my kids have allergy. I feel confident no one will be shipped off to grandma's house over cat dander
- M. Haymier
I've used Pacagen for about a month now and have definitely noticed a difference in my allergies around my house. I like that the spray helps me target specific areas of the house, and compared to some other dander reducing sprays, has no strong invasive smell. The bottle is still going on strong and I'm happy to be more comfortable around my house!
- N. Ly
Expensive but worth every penny!! I will be buying more for sure. Such a stress reliever!! THANK YOU!
- E. Jardine
My spouse has severe allergies to cats but loves them. With this spray we can sleep with our two cats in our bed and she can sleep through the night with no issues.
- R. Roizin
My partner has a cat and I couldn't ever go to their place. But not anymore! I bought the starter pack and walked into the apartment spraying everything. It went so well that I'm at their place all the time now. I can even tolerate the cat sleeping on the bed with us. This stuff is a game changer and I highly recommend!!!
- E. Marteal
I’m rather skeptical of most new products or anything that claims it reduces allergens but I must say I am pretty satisfied. I think I’m going to keep using it because my sleep is better.
- C. Fry
It really helped my sudden eczema reaction caused by cat allergens immediately. Life saver. This is enabling me to keep my fur babies, even in a studio where my cats often sleep with me. I take the spray to my friends' place with cats too and I can hang out just fine. Thank you!
- S. Nagano
I have only been using Pacagen for a short while and have already noticed a difference in my allergies. Use of Pacagen in combination with increased vacuuming have led to a noticeable positive effect when I use the spray and I have stopped having issues with rashes and stuffy noses caused by allergies to my cat.
- A. Bruno
Every time I leave home and come back even taking allergy pills, my face swells in huge hives that looks like balloons and burn and itch for a week. I had my home sprayed with Pacagen last month before I returned home. It’s truly a miracle.
- B. Thorne
Us vs. Them
Instant relief. No side effects. No discomfort. Just a smarter way to treat allergens.
Trusted By Doctors And Experts

Dr. Andrew Findlaytor
Licensed Veterinarian
"As a vet, I've seen so many pet parents struggle to find a way to manage their allergies. I was so relieved to hear about Pacagen's products - they work great and are safe for cats!"

Best Products 2025
3M+ Facebook Followers
"The magic that is in this spray makes me feel I don’t have to compromise my quality of life while living with my furball anymore — particularly because spring is notorious for being shed season."

Dr. Basil Kahwash
Board Certified Allergist
"I recommend Pacagen to my patients because it gets to the root of allergy flare-ups. It's a safe, effective solution that people with allergies can trust."

Katie Couric Media
1M+ Subscribers
"Instead of taking medications that work to reactively address your symptoms after they’ve begun, this spray can work proactively to ensure that the symptoms never manifest at all."
how to use it
Find areas in your house that cats frequent, such as the couch, the bedroom, or nearby the litter box.
Spray these areas generously with our Allergen Neutralizing Spray and wait 10-15 minutes for WhiskerBlock to work its magic.
Repeat this process every 2-3 days based on symptoms to enjoy your newly discovered cat allergen-free life!
FAQs
Definitely! We made sure to use a completely pet-friendly approach when creating our formulas. Each part of the formula was hand-picked to be safe for everyone, four-legged or not, involved. However, it’s best to avoid spraying directly onto cats – mainly because cats usually don’t like getting wet. On top of that, WhiskerBlock is always manufactured to food-grade standards.
WhiskerBlock, being a protein, is by nature subject to degradation when dissolved in tap water, as minerals and impurities can disturb its structure. The Stabilizing Solution is formulated to preserve WhiskerBlock's structure as long as possible without hampering its neutralizing properties.
We don't currently make a scent-free version. However, the scents included in our Allergen Neutralizing Powder are very mild and are included in very small quantities. Most customers report that the scent is close to unnoticeable after spraying.
Our products use the latest developments in biotechnology to provide you with a safe, pure, and environmentally friendly solution to your allergies. Internal testing found that WhiskerBlock is capable of neutralizing up to 98% of Fel d 1. Other products on the market are only able to neutralize up to 50% of Fel d 1. On top of that, our products are incredibly safe to use and are non-invasive to you and your pet’s routine.
While undissolved, the Allergen Neutralizing Powder doesn't expire, but it is most effective within 1 month of dissolving in distilled water. However, if you dissolve the Allergen Neutralizing Powder in our Stabilizing Solution, it'll be effective for up to 2 months.
Spraying frequency depends on a lot of factors, including how much Fel d 1 your cat produces, how severe your allergies are, and how sensitized your immune system is. We recommend starting out by spraying once every 2 days, then increasing or decreasing the frequency depending on if your symptoms are still present.
We take pride in the fact that our sprays are designed with environmental consciousness in mind. Where possible, we use biological ingredients that have no long-term environmental impact. In fact, 99% of the ingredients in the powder are biodegradable! We also make sure that all of our partners share a similar commitment to environmental consciousness.
For orders within the contiguous United States, we offer 3-day and 5-day shipping options. To Hawaii & Alaska, orders can take up to 8 days to arrive. For orders to Canada, please allow up to 10 days for shipping, as CBSA processing times vary.