

🐱✨ Transform your multi-cat chaos into calm with science-backed serenity!
FELIWAY® MultiCat is a pheromone diffuser refill pack designed to reduce tension and conflict in multi-cat households. Each 48ml refill provides up to 30 days of calming support, covering 700 sqft, using drug-free pheromone analogs trusted by vets worldwide. This 3-pack value set ensures continuous peace, backed by over 25 years of feline behavioral science.








| Customer Reviews | 4.4 out of 5 stars 25,848 Reviews |
M**M
Game changer
These work amazingly to help reduce stress and anxiety. I have an older cat who didn't like her new brother very well but this helped calm her down. But I started using this product because my new cat developed crystals in his urine due to stress and almost died. After emergency surgery he's doing great and the dr. recommended this product and special prescription food. I've been using it for 2 years and has helped with my cats. It's very safe and easy to use. There's no smell or leaking.
A**R
I believe it worked!
We have a pair of 6 month old kittens from the same litter who are closely bonded. They are great friends and love to play together. We had recently had the male neutered. He had recently recovered, and been released from his "cone of shame" when we had his sister spayed. She was wearing a soft cone that we had gotten from the vet, so she wouldn't be able to get at her incision. We were told by the vet that her activity had to be very restricted for the first several days after her surgery, and, of course, her incision had to be protected. Since she and her brother like to play rough, we figured we would need to keep her separated for at least the first day or two post-surgery, and watch them carefully after that to make sure they didn't get too crazy, and no one got after her incision. Naturally, the evening of the day she had her surgery, when I opened the door where we were confining her to check on her and spend some time visiting, her brother and our older cat both got into her room. I figured I would let them visit her, and see how it went. They were being sweet and calm, and, after the requisite sniffing was out of the way, they just kind of hung out in the room with us. (Her brother didn't appear disturbed by the cone, and even groomed her face a bit. He didn't act at all weird around her, or like he didn't know her.) At bedtime, of course, my husband and I had to remove the other cats from our girl's room, since we couldn't really supervise them while we were sleeping, and she still needed to be activity-restricted. We already had a couple of Feliway diffusers, one with the Optimum formula, and one with the Classic formula, since we had had to separate the boy for a bit both before and after his neutering, which made no one happy. Sometime during the night, the girl had gotten her soft cone inverted, so it was kind of down around her shoulders instead of around her head. Her brother completely freaked out when he saw her that morning at breakfast. He hissed and looked big and acted like we had a strange cat in the house. It was really weird. I thought maybe it was because the cone was inverted, so I flipped it up so that it was back around her head, like it had been the evening before. Nope. He was still treating her like she was a stranger and a threat. I had a recovery suit I had purchased for her, so we put that on her and took the cone off, to see if it made any difference. No joy; he was still being weird, and we were concerned he might hurt her, so we had to separate them again. We tried periodically letting them interact again to see if he would get over it. Still no joy. By the evening of the second day, I was very concerned. He was not "getting over it". He actually hid under the bed during playtime and treat time that evening. She seemed to have her feelings hurt that her brother was treating her this way, and her seemed very anxious and stressed. (He is already an anxious kitty - thus the other Feliway diffusers we already had running.) I decided I needed to try the Feliway Multicat formula to see if it might help. Of course, I realized this an hour too late to pick up a vial at my local pet supply store, but I was able to order one on Amazon for delivery the next morning. The package came on time, and, shortly after I got up, I brought it in, and plugged in the Multicat vial. Over the course of the day, our boy seemed to gradually calm down. I wouldn't say he was interacting with his sister normally yet, but he was not acting like he was afraid of her, or treating her like a stranger, any longer. As long as we had to separate them at night or when we were out, he would be weird again for a few minutes when they were together again in the morning, but he would get over it pretty quickly. We're now a week out from her surgery, and, even though she's still in the recovery suit for a few more days, her brother is back to treating her like a member of the family, and not like we brought some kind of alien in the house. Sanity has been restored. I knocked a star off on value for money because the refill vials are expensive, almost as expensive as buying a new diffuser kit. I don't think the refill vials should be that expensive. It doesn't provide much incentive to buy a refill, vs. throwing away the diffuser and just buying a new kit when you need one. Not very economical, nor environmentally friendly, Feliway. I would have knocked off a couple of stars on value for money, but Amazon was offering the vial at a discounted price, and the product did work. These products are expensive, and I hope not to need them indefinitely, but, they did help us and our kitties get through a crisis.
L**E
They work!!! Pics Don’t Lie, But a Word of Caution…
I got two new kittens for a household with three adult (5 y/o) cats. For the first week, we kept them in my bedroom and swapped blankets sometimes. Then I decided to quarantine the adults and let the babies run around for a bit. Everything was fine until the babies went back in my room and we set the adults free. My biggest boy tried to spray stuff… FOUR times. I kept grabbing him and putting him in the outdoor catio where the litter boxes are. Then I caved and put a box full of fresh litter by the catio door, which he used 3 times in as many minutes with explosive diarrhea. Didn’t want petting or his treats or nothing. I thought he was being a bit of a drama queen considering the kittens’ scent had already been wafting from my room for days (he even watched a few play sessions through a hanging fabric screen door on my bedroom doorframe, which I recommend, AND he walked around smelling the room whenever I was cleaning it and the kittens were in the bathroom). But anyway. I had these shipped overnight. I wasn’t “desperate” exactly… but I was wanting to speed along the instructions if I could, while avoiding the beginnings of an all out spraying war! I have all neutered boys. So I was kinda desperate. I’m a gardener and vegan, yet dislike anything that mimics what’s “natural,” and these either sounded like a bunch of baloney or some kind of pheromone drug, buuuut… good reviews and a little desperation go a long way. I wasn’t disappointed! It’s been a week, 8 days to be exact, and the adult cats have tolerated co-living with the kittens during the daytime extremely well. Are we pals? Well, not exactly, but the older cats tolerate a little batting at their tails and even sharing a cat tower pedestal (for five minutes, but still, they don’t hiss, just leave after that). I think having two kittens to wrestle with each other and burn off that excess energy really helps - ya’ll only getting one kitten, idk what yer thinking, I’ve been down this road several times by now, and the rule is to always get TWO kittens so they can play with each other, guys. So, yes, in my opinion, they are extremely effective. However, a word of warning: each plug-in needs its own outlet. Not both ports, just one, but I guess what I mean is, I plugged two into their own ports and one into one of those industrial-strength multi-outlet strips. Supposed to handle anything. Guess which plug-in overheated? I felt them all at the beginning and end of each day to make sure they were warm and working (slight scent sometimes, but nothing all that noticeable) and one evening, the one not plugged directly into the wall was HOT, parts of the device and wick brown (see pics). The others were normal. So I can only guess that it’s because I didn’t follow the instructions (which specifically tell you NOT to share outlets with other devices). User error. And I can probably guess that lots of these reviews that claim these aren’t safe are also not lending a direct outlet to each one. That said, it’s a deduction, so use with caution and touch them sometimes. Also look at the instructions for placement, because the bottle goes under the plug and I see some pics with it upside down. These are just the refills, not the plugs/kit, which is another silly reason this product is rated lower by some people who don’t read what they’re ordering. The liquid in the bottle is about 1/4 gone after a week, so yes, I’d estimate these last a month. Two thumbs up from me. The star I docked is really just because the product claims to have an internal safety shut-off in the event of overheating, user error or not, but it didn’t really seem to activate in my case and there were some small scorch marks that were basically my fault. Don’t make my mistake! Edit: the new design of the plug makes scorch marks basically a thing of the past. I also like the new “I’m working” indicator light. However, I have taken a more active role in rotating refills every 12 hours, meaning each morning and night, I switch out the refill with a second one that I keep capped under the outlet. This is because the wick looks pretty dried out after 12 hours (see pic with one light / one dark) and I want the diffuser to be able to do its job effectively. Probably an extra, unnecessary step on my part, but. Alternatively, you could probably just unplug it in the morning and plug it in at night, to allow time for the solution to thoroughly soak the wick again before plugging back in. But I like to keep mine going at all times. A bit of a chore, hence the 4/5 stars still, but I do it when I’m doing the other cat chores anyway and we’re all still getting along pretty dang good.
E**S
A happy kitty means happy humans!
This actually works with my shelter rescue! No detectable scent, which I'm thankful for. Does not leak, does not make the plug-in device overheat, and is very easy to screw in. Great value, too! I can always tell when it's getting close to time to change the diffuser, as my cat begins displaying more symptoms of anxiety. (clinginess, frequent short naps instead of longer sleep sessions, following me and my son more than she already does, and self-destructive behavior). Despite only having one cat, we bought the multi-cat refills since they were a little cheaper at the time. Since then we've used both the classic and multi-cat variants, and have seen the same positive results.
S**R
These work!
My cats have been through a lot of chaos in the last 9 or 10 months. Packing up our house for months to move, driving across the country in carriers & staying in motels, and now finally, our new home, which is still a mess of boxes everywhere. I started using these plug-ins during packing, and they worked great. Even my most nervous cat didn't do ANY "acting out". I wish there was a type for the car! I started using these in our new home, and I'm sure it will relax them. Humans can't smell these at all, but apparently cats do!
E**G
Keep the pet from consuming the liquid and unable to bite the diffuser.
I'm not sure if this product works as it's supposed to, but it seems to. We saved a 5 kitten litter on their first day from our window well. We noticed and read that if they are away from each other, at a vet for instance, they smell like the vet office and all the other cats at the vets, such that when they get home the other cats smell this as it's the primary way dog's and cats, and probably all other animals know one another. The foreign smells cause fear and they react by warning the supposed unknown intruder by hissing and potentially fighting. After quite some time that the initial feliway product we purchased was empty our sibling cats started fighting one another, usually it was our two largest and strongest males fighting for alpha status (dominance). Remember that in the wild almost all cats are solitary. The only exception are lions which live in a pride. So with multiple cats we're putting them in a position to deny their nature. So we bought some more, and it seemed to have cured the problem. Now that supply has been depleted, so as a test it further, we're going to wait a while to see if they start having fights again. At which time we'll buy some more as a means to be sure. To those that said the product made their pets sick, I'll provide you with some thoughts. Apparently to eat the product is said to make one sick or possibly die. In all homes, at least in America, probably 90 some percent of all electrical outlets are approximately 12 inches above the floor, which is easily close enough to the floor to be reached by common pets like dogs and cats. The product is supposed to be vaporized into the air by heating it up so as to do so. Being a college student taking basic chemistry, I know that heat can chemically change a mixture into something else. As a vapor breathed in, it may be made to be harmless to pets and humans, so that's the way to deliver it, NOT to be consumed and travel through the digestive tract. We use a surge protector that we've double sided taped high on the wall so that the cats can't reach it to lick it. Our cats have never gotten sick like some of you have reported. If you care to do this make sure it's the thicker foam type double sided tape that's about an inch wide, because it conforms to irregular surfaces much more readily. Thus won't become detached as easily. After a year and a half ours still hangs there. Also attach it to the surge protector along it's entire length, because the more tape the better the hold. And don't put it too close to the ceiling because the diffuser will deposit the vapor as an oily residue on it. The one, or maybe more, person/s complained that the diffuser dripped the liquid on the floor. It was because she had it upside down. Understand that the tube inside the bottle of liquid is a siphon, it sucks up the fluid and heats it to turn it into a vapor. How else could the vial last a month, it's designed to siphon thus dispense at a certain rate. You don't have to be a physics major, just understand basic physics. And high on the wall makes more sense because it's common sense that what goes up, must come down. And the dispersion in a room will be greater the higher the source. I can't attest to the fact that it's safe to use, as I'm neither a scientist nor do I have a chemistry lab at my disposal. We have to trust the manufacturer, hoping they have truly vetted their compound, to ensure it's safe in the long term. As human money making ventures often care more about the money, than they do about their customers well being. Just look at all the chemicals they put in human food to improve it's looks, taste and shelf life, that have been found to be unhealthy, despite those supposed authorities that have said otherwise. So because we're still testing it's effectiveness we're only giving it 3 stars. Once we're reasonably sure it is in fact working as advertised, we'll revise our rating.
O**A
Calmer kitties
My cats dont fight anymore, no yowling anymore, both are playing with toys more.. I can tell a difference
S**S
Nice product, it delivers.
I've been using this for years, on the recommendation of my vet. I have a family of 4 cats, and they are all getting along now!
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