Vetscription Sergeant's Calming Diffuser Refill

I don't have any scientific evidence this works. But I brought home 2 nearly feral kittens who spent a week hiding under the furniture. A couple of days after I began using the diffuser, they came out and started interacting with me and playing. My daughter used the same diffuser in a household with a very vocal 17-year-old cat who was cantankerous and afraid of storms. She's still a tad cranky but she stopped vocalizing and running for cover when she heard thunder.

This stuff seemed to really calm down a new cat that we got... it was the nervous type and this helped.Problem is finding these refills... hard to find, and I think I go the last one.

This product works great for my old cat. We recently had to take in my elderly cat who had been living with my parents. He is grumpy and mean cat and has always been that way. We used this product to try to make the transition easier and it worked immediately. He is friendly now and comes out from his "spot" all the time.

I really don't know what it is, because I don't ascribe to the oils and potions mumbo-jumbo, but my cats, who are world-class markers and fighters, stopped marking and fighting when I plugged this thing in. We've had these cats for many years, so they haven't just decided to get along with each other or to have better house manners. This item was the only thing we changed.

Excellent! My cat is very very happy... The stress is practically gone, and his personality is back. I love this product!

Sucks do not waste your good money on this product!

Product really works but why is the refill more than the diffuser, which comes with a full bottle?