Name: OnlyCat - Microchip Cat Flap with Prey Detection
SKU: OC-1000
Availability: InStock
Rating: 4.88 (618 reviews)

618 owner reviews4.88/5

Rated 5 out of 5

Miriam Kelly – 1 April 2026 Trustpilot

A Real Game Changer for Cat Owners

This incredible gadget is heaven sent for anyone who dreads coming home to yet another feline murder scene. My cat is a dedicated mouse hit man and I’ve spent the last two years finding disgusting surprises – dead or alive – throughout the house. Turns out we didn’t have a mouse problem until we got a cat. He recently upgraded his skill set to rats, and something inside me broke. Although this cat flap cost more than my last holiday, it’s made life so much more relaxing. I no longer have to wonder what carnage I have to come home to or what on earth I’ve trodden on in the dark at 3am on the way to the loo. Thank you, OnlyCat. No really, THANK YOU.
Rated 5 out of 5

Sara Boström – 1 April 2026 Trustpilot

This product changed our lives

This product have changed our lives. No mouse (dead or hurt) are waiting out side the bedroom door in the morning. It’s 100% amazing. This door have blocked our cat every time he tries to get in, carrying a mouse in his mouth. It has also blocked a big rat, trying to get in by itself.
Rated 5 out of 5

Lisa Hopper – 31 March 2026 Trustpilot

I had this installed and within 1 hour…

I had this installed and within 1 hour saved me from having a pigeon in my house! Within 2 hours it stopped a mouse running round and now 3 days in stopped my cat bringing a rat indoors! This is the best product I’ve purchased and well worth the money, I just wish we had it sooner! With my second cat being let loose in a few days it has reduced my anxiety ten fold. THANK YOU ONLYCAT.
Rated 5 out of 5

Rasmus – 27 March 2026 Trustpilot

Really flexible and friendly customer service

Really flexible and friendly customer service. I appreciate that enormously.

Translated from Danish

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Virkelig fleksibel og venlig kundeservice

Virkelig fleksibel og venlig kundeservice. Det sætter jeg meget stor pris på.
Rated 5 out of 5

Sophie – 27 March 2026 Trustpilot

Life Changing

Only Cat has literally changed my life. No more living in fear every time the cat flap opens and no more chasing mice round at 3am. As someone who is irrationally terrified of mice my only regret is not buying OnlyCat sooner.
Martin and Tomas should be very proud of their creation. The customer service they provide is 10/10, always getting back to you quickly with any queries!
I was hesitant about it the cost, but it’s worth every penny.
Rated 5 out of 5

Nicky Lay – 25 March 2026 Trustpilot

Brilliant

Purchased the Onlycat after one of my cats brought a live rat in to the house. I am really pleased with it and its working brilliantly, great having the option to set curfews. Customer service is second to none. Emma had the patience of a saint helping me set it up which was’nt difficult, I’m just bad with technology !!! Would highly recommend
Rated 5 out of 5

Patrick Stutz – 24 March 2026 Trustpilot

I am pleasantly surprised and also…

I am pleasantly surprised and also delighted by how the prey detection works. We have had the cat flap in use for about four weeks now and 5 out of 5 alerts were correct. The app could be developed further in scope and design, but it runs stably.

Translated from German

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Ich bin positiv überrascht und auch…

Ich bin positiv überrascht und auch begeister über die Funktion der Beuterkennung. Wir haben die Katzenklappe nun ca. 4 Wochen im Einsatz und 5 von 5 Meldungen waren korrekt. Die APP ist bezüglich Umfang und Design ausbaubar funktioniert aber stabil.
Rated 5 out of 5

Erwin – 24 March 2026 Trustpilot

Wonderful machine

Wonderful machine, perfect service, great product.
Rated 5 out of 5

Debi Lang – 20 March 2026 Trustpilot

After many 3am surprise deliveries from…

After many 3am surprise deliveries from my cat (mouse,rat,bat,bird) I began my search for a catflap that could keep these surprises outside and not running around my bedroom.
Enter Onlycat….
This is a one of a kind and remarkable!
It works with an AI camera that learns to recognise my cat and allows her access in/out of home, but it also recognises when she brings home contraband and locks the door and keeps her outside.
It has an app,which sends a little video each time the catflap is used, which is really helpful to know when she’s in/out/barred temporarily and it brings me immense peace of mind.
I cannot recommend it enough.
Rated 5 out of 5

Steve – 16 March 2026 Trustpilot

Absolutely Brilliant!

Absolutely brilliant device! Yes it’s expensive but it’s worth the money given the tech involved! My wife and kids love our cat but go into panic mode if he brings them a ‘present’! This cat flap stops him in his tracks literally! Is very effective stopping the cat bringing in contraband and also very funny watching him try through the app! Also due to its microchip recognition, we are now looking to introduce a kitten to the household, with the confidence he can’t get out while allowing our other cat to carry on as normal. Great bit of kit!
Rated 5 out of 5

Andrew Bartlett – 15 March 2026 Trustpilot

OnlyCat works as advertised

OnlyCat works as advertised – we’re so glad we got it! No more mice, rats and birds loose in the house. The app is easy to use and the staff are friendly and helpful. Highly recommended.
Rated 4 out of 5

Paul Murphy – 12 March 2026 Trustpilot

It was a tricky start as the latch…

It was a tricky start as the latch wasn’t popping up, allowing an outside cat to come in and spray, but after a chat with the very helpful support people and a custom rule being sent to our cat flap the sprayer hasn’t been able to get in, and we don’t even see it trying any more. One aspect that was interesting is the flap making an angry meow noise when it detected the spraying cat, that was quite effective but needed changing as they seem to have got used to it.
Our cats were nervous about it at first and we had to help the second cat through manually a few times before they got the idea but they are happy with it now.
Rated 5 out of 5

Brigitte – 10 March 2026 Trustpilot

Best cat flap ever

The flap works flawlessly. Prey stays outside. At last I can sleep through the night again — as a senior, a night's sleep is "sacred" to me. The flap is expensive, but I would buy it again in a heartbeat. Installation is fairly simple, and the onlyCat support is absolutely great: if you have questions you get help very quickly and very kindly!

Translated from German

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Beste Katzenklappe aller Zeiten

Die Klappe funktioniert einwandfrei. Beute bleibt draußen. Endlich wieder nachts durchschlafen, für mich als Seniorin ist der nächtliche Schlaf „heilig“. Die Klappe ist teuer, aber ich würde sie trotzdem sofort wieder kaufen. Die Installation ist relativ einfach, und der onlyCat support ist super toll, man bekommt bei Fragen sehr schnell und freundlich Hilfe!
Rated 5 out of 5

Sue Archer – 7 March 2026 Trustpilot

Worth every penny - don’t hesitate to buy

I love our cats, but I hate rodents. Only cat is an amazing bit of kit. Its detection sensitivity is superb and has so far had a 100% success rate with ‘contraband detected’ and their entry barred. On one occasion just having a tongue sticking out was enough to temporarily bar entry.
Not cheap, but worth every single penny. I’m telling everyone I know who has a cat about it .
Rated 2 out of 5

Freyja Markee – 7 March 2026 Trustpilot

Overpriced and needs more work

Updated review 4/20/26
After the first 2 months we finally saw one of our cats kept out due to having a rat in his mouth, which was great.

However in March my husband noticed a weird smell and something off about the cat door. The wall adaptor was hot to the touch due to the wires of the cord separating from the metal piece that goes into the adaptor. This resulted in the wall outlet needing to be replaced and could have started a fire if my husband had not been home at the time. I reached out to customer service and this was their response:
“I’m sorry to hear about this issue. We’ll raise it with our power adapter supplier for further investigation.

Incidents like this are extremely rare. In some cases, a localised fault can lead to overheating and minor plastic deformation, which may cause the adapter to stop functioning. That can happen if the cable is snagged, leading to damage of the internal connection, increasing resistance, and ultimately localised heating/melting.

In the meantime, you can safely use an alternative adapter, such as one from an iPhone, MacBook, or Android device. Would you like us to send you a replacement adaptor?

Apologies for the inconvenience caused, and thank you for bringing this to our attention.”

We have never had a similar issue with any other charging cables and the low sense of urgency from customer help has soured our impression of this door.

In addition to the above experience we a were disappointed that clear installation instructions were not included in the box, the app is not intuitive for a first time customer and the size of the entry flap for our cats is too small. Our cats (9 pounds and 16 pounds) will use the door but we can tell that they do not like it compared to the size of the SureFlap Pet Door.

This product is not worth $700-$900, it’s more of a $300-$400 product but since they are currently the only company that currently has a prey detecting pet door available for purchase they can charge a lot.
Rated 5 out of 5

Gary M. – 6 March 2026 Trustpilot

Some things in life are expensive, some things in life are priceless

Some things in life are expensive. Some things in life are priceless. OnlyCat falls into the latter category. I can’t begin to put a price on the peace of mind having an almost foolproof way of preventing my cats from bringing in all manner of critters, from fieldmice to rats, birds to bats, and frogs, into the house.

Not only can I sleep soundly, not listening out for the familiar sounds of a cat toying with its prey, or find decaying remnants of animals that have been batted under sofas, cupboards and beds, but this has changed the behaviour of the cats. Just over a year since installation and I’m being alerted to far fewer ‘contraband detected’ incidents, to the point where now, the cats don’t even bother trying the cat flap so I sometimes wake up to a dead mouse on the outside door mat, but far less often than I was being woken up to previously.

This is seriously worth the money.
Rated 5 out of 5

Eva – 5 March 2026 Trustpilot

Honest review with pros and cons

Honest review with pros and cons

I bought an Onlycat catflap and I can honestly say it has been completely life changing for us. Our cat is proper hunter, it started with worms, then mice and birds and then she moved onto large pigeons. We were up countless nights chasing half dead mice or coming home to decapitated pigeons in our living room. I saw the catflap and it’s not cheap, but after looking into ZeroMouse and other options which are simply not as effective, I took the plunge and bought one. A few hours after installing it, it blocked the first mouse being brought in, and I have lost count how many pigpens and birds and other animals it’s blocked since having it in October. Maybe about 20+ attempts? The technology absolutely amazes me. The customer services are also really on it. I had one tiny installing issue and within an hour it got sorted. The only con, which isn’t really a con, is that it took one of my two cats about 5 days to learn how to open it. As it scans every exit an entry, so it has a tiny delay until it clicks open. Cats learn it very quick. Mine is wired in via a plug near-ish our door. It comes with a long string cable. Everything pings up on my phone. You can download the videos if you want, I usually download the ones where my cat is being blocked with a bird in its mouth so I can laugh at it and celebrate.
So my verdict overall. It’s not cheap! But the technology is absolutely incredible. We’ve not had a single dead animal in our home since. It got so bad that I was going to rehome our cat. We have our cat, and we can all sleep at night again. I don’t know how to attach videos but I have many to show !
Rated 5 out of 5

and Deliver To – 3 March 2026 Trustpilot

No more carefully inspecting the hall in the morning for mice remnants

This is a great product.
It was easy to swap out our sureflap for this new catflap & although I needed a longer USB cable it was easy enough to route it to a power point.
We’ve now successfully repelled over a dozen attempts by our cats to bring in mice in only a 2 week period.
We also found that one of the neighbours’ cats regularly poke its head into the cat flap!
Rated 5 out of 5

Laurent L – 2 March 2026 Google

Very good gate, demonstrates. I can't live without it. Often, when we don't see it, the hatch has already seen it.

Translated from Dutch by Google

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Zeer goed poortje, voordoet. Kan niet meer zonder. Vaak als we ze niet zien heeft het luikje haar wel gezien.
Rated 5 out of 5

Daniel Ladebeck – 2 March 2026 Google

For years we struggled with mice in the house because our two predators dragged one through the cat flap almost every day.

We've had the OnlyCat cat flap for two months now and haven't had a single mouse in the house!

The flap has correctly detected more than 15 times that the cat was trying to sneak something in.

We're very happy with it.

Translated from German by Google

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Wie hatten jahrelang mit so vielen Mäusen im Haus zu kämpfen weil unsere beiden Raubtiere fast jeden Tag eine durch die Katzenklappe schleppen.
Wir haben jetzt seit 2 Monaten die onlycat Klappe und keine Maus mehr im Haus!
Die Klappe hat schon mehr als 15 mal korrekt erkannt dass die Katze etwas schmuggeln wollte.
Wir sind sehr glücklich damit.

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OnlyCat – Microchip Cat Flap with Prey Detection

Let cats be cats — and keep what they catch outside.

618 owner reviews4.88/5