FELIWAY Aroma Diffuser, Optimum Cat, Enhanced Calming Pheromone, 48 mL | 30 Day | Starter Kit | Translucent | Pack of 2

Was recommended this product by a volunteer when adopting a feral kitten. I knew I’d have my work cut out for me and figured every little bit helped. So I got this ahead of time so it would be set when she came home. Fast forward a month. This little gem of a kitten is bopping around the home with my resident cat, pleased they were fast friends. And then out of the blue they began having some hissing squabbles turned physical fights over the course of a few days in the play area. This hadn’t happened since they first met. What the heck?? Then I realized the plug was empty. I put in the refill and by the afternoon and thereafter that behavior hasn’t surfaced again. I share this story because for this house, this product didn’t work miracles when I plugged it in. It still took a lot of patience and slow integration to bring these kitties together and for the kitten to feel confident in her new space. But it IS objectively a product that is noticed in its absence. The behavior was there when this plug was out, non-fighting kitties when in use 🙌 this is worth it. A couple things I wish I knew to begin with when deciding whether to jump on train feliway: 1.) the range of each plug extends up to 700 ft. I ended up ordering a second one and put them on opposite ends of the house. If your cat(s) have an isolated ‘hot button’ room or situation where they regularly have issues (like the master bedroom, at meal time in kitchen ie) you would likely be fine plugging the one in right in that area. If your kitties/cat has an overarching behavior/pattern you’re trying to manage, keep a close eye on that range to see how many you may actually need. 2.) After also trying Feliway’s ‘Happy Cats’ Multicat refill, this Optimum formula performed better here (optimum: 1-2x play fighting-turned-real fighting per month, whereas with the Happy Cats this was still happened 1-2x a week.) 3.) these plugs don’t last forever and will begin not putting product in the air. Instructions say these need to be replaced every 6 months. This is one of the few things I have on auto-ship to remind me to change the unit bc I will undoubtedly forget when I changed it last. 4.) I’ve had no issues with the plugs up to 6 months of use. They are super consistent at running out between 29-31 days.

I bought this because my cat randomly decided my sister’s room was the only safe place on earth. For a full month he barely left her bed — not to eat, not to explore, not to lay on my chest like he usually does. No major stressors, no house changes. He just withdrew. Two weeks with this diffuser plugged in and he’s slowly starting to drift back into my room again. Not magically fixed. Not instantly cured. But I can see the difference in how relaxed he is — he doesn’t bolt back to her room the second he hears a noise, and he actually falls asleep on my rug now. That hasn’t happened in weeks. You just need to be patient. This product helps, but it doesn’t flip a switch. ⸻ 🧪 How it works in real life (not in marketing language) This thing releases synthetic pheromones that mimic the “safe and calm” scent cats leave when they rub their cheeks on walls or furniture. Your cat basically interprets the space as familiar again, even if nothing changed visually. For my cat, the shift was gradual: • Week 1: He stopped hiding under my sister’s blanket every time someone walked by. Still preferred her room, but less jumpy. • Week 2: Started sleeping in my room for parts of the day. Followed me around the house for the first time in a month. • Now: Still splits his time, but he actually seeks me out again. That alone makes it worth it. If your cat is territorial, anxious, or has recently changed “favorite humans,” this helps smooth out the edges. ⸻ 🕰️ Timeline expectations (don’t expect overnight results) 24–48 hours: Basically nothing. Days 3–5: Slight decrease in clinginess and tension. 1–2 weeks: Real improvement — roaming more, relaxing in different rooms, less hiding. Full month: The diffuser is meant to build a stable baseline by then. If you’re impatient or expecting instant magic, you’ll think it doesn’t work. But if you treat it like a slow, steady recalibration? It actually delivers. ⸻ ✔️ Pros • Easy setup — plug in and forget about it • Genuine behavior changes over time (more confidence, less hiding) • Doesn’t smell or make noise • Helps rebuild routines after stress or environmental changes • Great for cats with “selective room loyalty” ⸻ ✖️ Cons • Takes patience — this isn’t a quick fix • Refills aren’t cheap • If your home layout is big, you may need more than one ⸻ 🔍 Pro Tips • Place it where your cat SHOULD be, not where they’re hiding. I put mine near my desk where he used to nap. • Don’t block it behind furniture. Airflow matters or you’ll basically waste the bottle. • Give it a full month. The packaging says 30 days because the effect builds. ⸻ 💬 Final Thoughts This didn’t turn my cat into a brand-new personality, but it nudged him back toward his normal behavior. After a month of him avoiding me and living in my sister’s room like a roommate who hates the lease agreement, this diffuser finally made things shift. If your cat is anxious, withdrawing, or suddenly glued to another person in the house, this is worth trying — just commit to the full 30 days and let the process play out.

Look, I'm not the type to leave a positive review on something that I can't prove is working, but in this case, it's a likely enough candidate to give credit where credit is (possibly) due. Our beloved eldest is perhaps the most anxious cat in existence. Before he came to live with us, he spent his youngest years being terrorized by an older, aggressive cat who would often ambush him in the litter box. He developed a lifelong fear of using it to pee (weirdly not for #2), and would try to pee literally anywhere else, be it on rugs, clothes that had fallen out of laundry baskets, hardwood, tile, cement, you name it. Any surface other than his actual box. Here's a truncated list of things we have tried to calm his anxiety/keep up with his peeing: - Different types of litters - Different styles of litter boxes - Different locations for the litter box - Litter attractants - Diet changes - Deterrent in his favorite floor spots - Enzymatic cleaners to try to remove any lingering scent - Extensive veterinary testing - Consults with behaviorists - Rewarding him when he uses the litter box (recommended by behaviorist) - Retraining in a large kennel with a litter box (recommended by behaviorist) - Calming collars - Other Feliway products - Prozac (prescribed by the vet) - Gabapentin (prescribed by the vet) Nothing worked, other than an elaborate and not entirely foolproof routine of taking him to the box personally and guarding him while he was in there. We had to do this multiple times a day, and he would still sometimes try to sneak off to do his business elsewhere. So, when we moved to a one-bedroom apartment with a lot of carpet, we were prepared to immediately lose our security deposit to his anxious peeing. We were convinced the move alone would leave him emotionally shaken to his core. We armed ourselves with some of the most highly-recommended enzyme cleaners (Rocco & Roxie), and were looking into expensive waterproof covers to put on approximately 600 sq ft worth of carpet, and then cover those with washable rugs. We were ready for battle. I called our vet to ask for a light sedative for both him and his younger brother, to make the moving day less stressful, and the tech suggested that we also get these specific Feliway diffusers. Although we hadn't had any luck with Feliway in the past, we were throwing absolutely everything we could at this, so we figured the worst they could was not work. Cut to moving day. We put both our groggy cats into the new bathroom with their litter box while the movers stomp around bringing in boxes and furniture. The second they're gone, we plug in the diffusers, let them run for an hour, and then cautiously let the cats out. Both of them are low to the ground, skittering from one room to the next in utter confusion. Eventually Anxious Cat finds a window to plop his butt in and doesn't move until dinner, but we spend the entire time watching him while we unpack, ready to jump up if he seems like he's scoping out new pee spots. By the end of the day, he hasn't used the litter box yet, and we're starting to wonder if maybe we should close him up with it in the bathroom for the night. At least there's no carpet in there. And then we realize ... we've lost sight of him. We bolt up and start canvasing the apartment, only to hear the digging of little paws in litter. Slowly, we creep to the bathroom door and peer in just in time to see him hop out of the box, giving us both a look of mild confusion as he sprints off to the window. But we weren't sure what he did. If he pooped, well, that's nothing out of the ordinary, and there was some in the box, so it could've been him or his brother. We decide to lock them in the bathroom for the night, but eventually succumbed to their piteous sobbing and let them out. Come morning, there's still no pee, but Anxious Cat is a champion at holding it until he finds the perfect spot to unleash. But finally, come afternoon, we actually manage to catch him in the act of peeing IN THE LITTER BOX. It's a monumentous occasion, and we shower him in catnip, treats and lots of play. He's delighted, and no longer slinking around with his belly to the floor. He's acting like a normal cat, cautious of his new space, but enjoying the comfort of his familiar beds and toys. It's now been two weeks, and he has done all of his business in the box, and NOWHERE ELSE in the apartment. We haven't even taken the plastic off of all of our enzyme cleaners! His anxiety is way down in general, and so is ours. We can let him out of our sight for hours at a time without worrying that soon we'll smell cat pee. This has been life-changing for him, and for us. I've never seen my little old man happier than he is now. And maybe it was just the change of scenery, the smaller space, not being able to smell the neighborhood cats who used to hang around our old house. Or maybe it's these Feliway diffusers. I honestly have no idea. But, I'm going to keep believing in their possibly magical power and keep buying the refills if that's what it takes to keep him happy, and keep our security deposit. So, why four stars instead of five, if this is (maybe) such a miracle product that has so improved the quality of life of both our cat and his human parents? Because it had ZERO effect on our younger cat. Usually, he's incredibly easygoing and adapts well to change. We weren't worried about him at all when planning the move, we figured he'd be as chill as he always is. Instead, he's been terrified and although he has no issues with using the litter box, he's spent most of these last two weeks hiding, jumping at every sound and refusing to play like he usually does. It's extremely unlike him, and it's pretty clear that the Feliway is doing nothing to help him. Which makes me think this product is very hit or miss, if it's doing anything at all. But rather than risk eternal damnation, I choose to believe in the power of Feliway, at least when it comes to our Anxious Cat (pictured above, with the carpet he has yet to ruin).

HIstory: I have a 7 month old female who, her and 3 siblings were rescued by a friend at 4 weeks. Mom was nowhere to be found and all four were in rough shape. A plea for help went out to help foster the kits until a home could be found. I agreed to foster one, became attached and decided to keep her. She needed to be bottle fed with KMR formula, had worms and severe diarrhea. Off to the VET we went and is in perfect health today. She has been spoiled with attention, toys, love and was a very loving cat who curled up around my neck when she napped. At 4 months she started becoming aggressive by attacking my face in the middle of the night for whatever reasons and drew blood. This aggression has increased to the point where it impossible to touch her. She will launch and latch onto my hand, growling, kicking & biting as if it was prey, not let go and draw blood. When she does this it is very painful and difficult to get her loose. So now I just respect her space and still show her affection but it has to be on her terms. Calming: A friend had purchased some calming collars for their cats and gave me one. That was nothing more than a Lavender walking air freshener. The only benefit it had is that I knew what room she was hiding in because the scent was very overpowering. Into the trash that went. Feliway: Researched their website, saw that is VET approved but I had a gut feeling and I was very hesitant to purchase this for $30. But, I thought I would give this a try and perhaps it will prove me wrong. My gut feeling turned out to be correct. I have been using the diffuser for 5 days now and there has been absolutely no change with her aggression. I understand that, like human beings, all cats are different and by no means am I discrediting Feliway. Perhaps 5 days isn't enough time for her? My advice, this is a 50/50. Use your judgement or go with your gut feeling. There is no guarantee that this product will work for all cats. For the cost of refills, I will not be ordering any in the future. There is a good article to read about the product on Cats.com. One paragraph states "To make it even more complicated, most of the research showing the supposed positive benefits of Feliway products was funded by Ceva Animal Health. This is the company that produces Feliway. Whilst scientific studies are bound by strict ethical rules, the results are still harder to trust."

I bought these after one of my cats ended up at the emergency vet due to a bladder infection. The vet suggested these would help as my cat may be stressed-over what? I'm not sure as nothing in our house has changed. But, I decided to give these a try as this cat is very good with humans but is mean and somewhat aggressive with our other cat (which is not really new behavior) and I hoped that this might make him a little nicer. Due to the size of our house, I bought two diffusers to space out in the places where he spends most of his time. Fast forward a month-I do not see any improvement in his behavior though he has not had another bladder infection. I'm not sure if the cause of that was stress but I'm glad to not have that happen again. As others have reported, these don't last 30 days and are quite expensive. But, I've also read that results may not be immediate so I'm giving them another try and ordered a few more months' worth to see if I see an improvement. I'll update my review after that, but at this point, the jury is still out.

This worked so well with my cats they were being extra naughty before getting spayed. They are both female but were still marking stuff. The price for this idea was spot on for other place if not cheaper. It’s made my cats more relaxed so they weren’t so crazy running and jumping off everything. We used this for 3 months and then backed off they have stopped doing the things they were. There is no timers in this idea you just plug it in and it’s goes for 30daus and it was spot on for the for the 30 days.

I am extremely optimistic that this is working, and it is such a relief! At the end of September, 2025 my five-year-old cat had a tumor removed with her spleen and a kidney, additionally she spent 2 nights in the critical care unit of a pet hospital. A month later (end of October), after a full recovery from her life saving surgery, we took her to an oncologist where they did an ultrasound and x-ray to check for regrowth of the tumor, no signs of regrowth, they suggested another ultrasound in a month. We took her for another ultrasound at the end of November, no signs of regrowth. About three weeks later (mid-December) we took her to the vet again because she was licking and chewing her fur off on one side of her body. The vet did a thorough exam and gave her a flea treatment (even though she is 100% indoor but may have been bit at one of her vet appointments) and she was prescribed a short round of prednisolone to help with her inflamed and itchy skin in the area she was licking and chewing. Immediately following that last appointment, she started hiding from us and would not let us approach her. She went from being a very confident, happy, social kitty who followed us around and loved to be pet and snuggled to not wanting anything to do with us, like she didn't trust us. My immediate reaction was to take her back to the vet but I suspected her sudden change in behavior may be anxiety brought on by going to the vet so many times in a short period of time and was associating us coming close to her to getting picked up and going to the vet. I was concerned that taking her to the vet again after just going two weeks prior would potentially exacerbate her anxiety. I spoke with my vet and we started giving her gabapentin to help relax her. After a few days, she still was not acting like herself and would move away from us if we got too close, she acted very timid in general, but was not hiding any longer, it was a small improvement, but still concerning because it is not her normal behavior. The vet hospital where she stayed after surgery used pheromone diffusers in the critical care unit for cats, and although I was a little skeptical, I started to read reviews and saw enough positive reviews that made me decide to order one. That was Wednesday night, it arrived first thing Thursday and I immediately plugged it in. I don't know if it is a combination of time, the gabapentin, and the pheromones, but the noticeable difference in her after the first day was undeniable - she was more relaxed and would let us come close to her, sometimes we could even briefly pet her. I ordered just one diffuser and moved it to whatever room she was in. Because I could see an improvement, I ordered two more the next day (Friday) and they were delivered the same day - I immediately put them in each of the rooms she primarily spends most of her time. By Saturday, she started letting us pet her and give her snuggles, she still has moments where she does not want to be pet, but a huge difference. It is now Sunday, she is clearly more relaxed and she is letting us pet her give her lots of snuggles, and she is purring again. She is not 100% herself yet and we still approach her cautiously, but she is visibly much happier, relaxed, and friendlier. Based on her sudden improvement after using the diffusers, I am confident that these have worked, and it feels like a miracle. If you have a stressed or anxious cat, I highly recommend trying it. It may not have an immediate effect like it did for my sweet girl, but I would give it time, it is absolutely worth giving a try.

I have a very noble and sweet cat, but when he gets extremely scared, he can become aggressive. This behavior has been there since he was a kitten. After trying many solutions without success, we finally discovered this product. The angry, nervous cat I knew is gone. Now he is calm, gentle, and sweet — truly like my baby. I searched for a solution for a long time but couldn’t find anything that worked. After he seriously bit us one last time, the animal protection unit recommended this product. It truly changed our lives, and I hope it continues to help us. We had two of these plugged in our home. Now we are moving to a new house, and so his emotional well-being won’t be affected. I bought two more and will install them before we move. I wanted to write this review for people who are struggling like I was. I highly recommend it. It really makes a difference.