OnlyCat - Microchip Cat Flap with Prey Detection
OnlyCat - Microchip Cat Flap with Prey Detection - Image 2
OnlyCat - Microchip Cat Flap with Prey Detection - Image 3
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OnlyCat – Microchip Cat Flap with Prey Detection

(618 customer reviews)

Price range: £ 275.00 through £ 499.00

Let cats in, keep mice out.

Microchip access in both directions, individual curfews and prey detection—all controlled through one app.

Fits a 165 × 172 mm opening, or a compatible circular glass cutout. Check fit details

Mounting
Where will it be fitted?
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Mounting Adaptor See all sizes and shapes →
Tunnel Extender – 50mm £ 10.00 Details ↗
Power cable

A 3 m power cable and adaptor are included. Mains power is required.

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USB-C Extension Cable — 1m £ 12.00 Details ↗
USB-C Extension Cable — 2m £ 18.00 Details ↗
USB-C Extension Cable — 5m £ 25.00 Details ↗
Optional extras
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Before you order

In stock · typically ships in 2–3 working days · secure payment

SKU: OC-1000 Category:

Wild outside. Calm inside.

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

  • Your cats, in and out. OnlyCat reads your cats’ microchips or compatible collar tags on entry and exit. Choose who may come in, who may go out and when, cat by cat.
  • A decision in the blink of an eye. OnlyCat checks for prey on the flap itself, typically in 0.2 seconds—even after dark.
  • See what happened. Review arrivals, departures and detected prey attempts, with videos, notifications and household sharing in one app.
  • Designed and built in the United Kingdom. Tested before it leaves us, with a two-year warranty and 30 days to try it at home. Read our returns and warranty policy.

“I feel so much better.”

  • “A device that’s given me my life back. Free to finally enjoy outings and holidays without worrying.”

    Fatima B.

  • “Our cat tried 16 times to bring a gift in. Waking up to see we avoided midnight carnage is just amazing.”

    Sarah C.

  • “I love my cat but I couldn’t cope with the presents. The flap did exactly what it was supposed to.”

    L Porquoi.

Rated 4.8 on Trustpilot by owners. Read owner reviews

618 owner reviews4.88/5

  1. RJ – Trustpilot

    Fabulous experience

    Fabulous experience. Took ages to get someone to fit it for me as needed new panels of glass, couldn’t wait to try it. Cats never used a cat flap before but one took to it that day and the other within a few days. I turned off the noises. One attempt at bringing something in, unsure what, but saved myself from crows and pigeons, their pre onlycat conquests and gifts they arrived at the open window with! Love the ability to time things, so they have a curfew. They love the freedom in the day and I love the certainty that when I get home, the only thing there is the cats having one of their extended naps, not a murder scene.

  2. Mark Bunbury – Trustpilot

    Our cats were a nightmare with bringing…

    Our cats were a nightmare with bringing in mice rats and birds. So we decided to give OnlyCat a go. And it is truly fantastic. Great to see the cats face when they cannot get in. But weirdly it was also comforting for my wife to see them every day when we wee on holiday. A great product. Well done and thanks

  3. Margaret Simpson – Trustpilot

    Only cat have been absolutely amazing!

    Only cat have been absolutely amazing!! They have developed a product that has stopped my cat bringing in gifts and given me my sanity back! Its been the most amazing cat flap I have seen and I will not go back to having another!

  4. Robba – Trustpilot

    Flap works great

    Flap works great. Stops the cats take mouse and other pets with them.

  5. Louise Champion – Trustpilot

    This catflap is a game changer!

    This catflap is a game changer! Stops unwanted gifts being left in the house which is great. Support has been fast and helpful.
    App is slightly basic but does the job. Just realise you need mains power close by to the flap and good connectivity for all to work well. Well done! Great job designing this product.

  6. Christoffer – Trustpilot

    No more mice indoors.

    The cat flap from OnlyCat has meant that we can sleep soundly, without live gifts in the shape of mice being delivered indoors. After a year of use we can say that it works really well.

    Translated from Danish

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    Slut med mus indenfor.

    Kattelemmen fra Onlycat har betydet, at vi kan sove trygt, uden at der bliver leveret levende gaver i form af mus indenfor. Efter et års brug kan vi sige, at det virker virkelig godt.

  7. Amelia Hurren – Trustpilot

    At first was a little dubious when my…

    At first was a little dubious when my husband said he wanted to buy this cat flap, was a bit like HOW MUCH! But now we have it, he was right. No more worrying about live presents at 3am and chasing them around the bedroom, or they have been let loose in the house and we didn’t realise. And it’s nice to know when he is coming and going and watching him come through when we first got it was amusing. All round been really good

  8. Rachel Darby – Trustpilot

    Works brilliantly

    Works brilliantly. The support is very good too. It’s really money will spent.

  9. David – Trustpilot

    Not cheap but well worth the money. Love it.

    The build quality is excellent and it really does work. I can keep track of both my cats and keep out the unwanted ones !.I also like the fact its on a mains supply as my previous brand would go through batteries very quickly. I had a small teething issue at first with one cat which turned out to be a faulty microchip which occasionally didn’t read and was replaced at the vet. During this time the customer care was excellent and they spent a lot of time and answered many emails trying to help. I’m very happy .

  10. Jolyon Mantripp – Trustpilot

    Love this cat flap

    Love this cat flap! Not only stops mice etc that previously ending up in my home but also alerts me to my cats coming and going. Had a teething issue after a couple of weeks when it was first fitted and they sorted it straight away.

  11. Heike Fritz – Trustpilot

    It's the best cat flap there…

    It's the best cat flap there is. I'm a breeder, so I can set individual outdoor times for each animal.
    And at last we don't have unwanted prey scattered around the house, left to rot where they lie.

    Translated from German

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    Es ist die beste Katzenklappe die es…

    Es ist die beste Katzenklappe die es gibt. Ich bin eine Züchterin, und kann so für jedes Tier eigene Zeiten für den Ausgang festlegen.
    Und endlich haben wir keine unerwünschte Beutetiere im Haus verteilt, die dann vor sich herum verwesen.

  12. Carsten Frederiksen – Trustpilot

    Excellent product that solves the problem…

    Excellent product that solves the problem of the cats bringing prey home.

    Translated from Danish

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    Fremragende produkt der løser problemet…

    Fremragende produkt der løser problemet med at kattene bringer byttedyr med hjem.

  13. Consumer – Trustpilot

    Best cat flap ever!

    Best cat flap ever!! Loving seeing my cats coming in and going out. The contraband detector has saved us from cats bringing mice in the house

  14. Akrp – Trustpilot

    Fantastic product!

    Fantastic product! No more vermin in the house! Customer service is good. You get an answer to your question quickly and they help you remotely. I'm really happy with onlycat❤️

    Translated from Dutch

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    Geweldig product!

    Geweldig product! Geen ongedierte meer in huis! Klantenservice is goed. Je krijgt op korte termijn antwoord op je vraag en ze helpen je op afstand. Ik ben echt blij met onlycat❤️

  15. Steve – Trustpilot

    This product is extremely clever

    This product is extremely clever. It really works. My cat got ‘found out’ four times and after that, had learnt her lesson and doesn’t even bother trying any more.

    Very likeable company, who answer your questions and are obviously really trying hard to make their product even better.

    It’s a joy to be part of this story.

  16. Rachel F – Trustpilot

    Does exactly what it says on the tin

    Does exactly what it says on the tin. Great product. I’ve had zero issues.

  17. Scholts – Trustpilot

    Definitely worth it!

    We have a pretty popular female cat. Thanks to OnlyCat, we can identify unwanted guests and keep them out. Meanwhile, she is free to go and come whenever she wants. She sometimes likes to bring a mouse or a bird as a gift. We are very happy that we can now receive those gifts outside the house! We had to import the OnlyCat flap into the EU. That was a bit difficult but definitely worth it!

  18. Tigamilla – Trustpilot

    Absolutely fantastic bit of kit

    Absolutely fantastic bit of kit, the help desk is brilliant and it’s been amazing being able to track when the fur balls are in or out of the house. The scheduling is also very nice, so they can stay inside during certain hours then it unlocks and they can free roam.

    Had it for around 3 months now, no issues at all!

  19. Julie Osborne – Trustpilot

    No more sleepless nights

    Great delivery, easy to use and peace of mind!
    Our cat has only tried to bring in twigs since we had only cat installed but it works!
    Its so nice seeing him come and go on the app when we are away

  20. Jan Willem – Trustpilot

    The flap itself, but certainly the support too, is very good.

    We have had the flap for almost a year now and we are no longer afraid of what we will find in the morning in the way of little birds or mice.
    That no longer happens, and the hunting for them has also decreased enormously.
    At the start there were some teething problems, but OnlyCat's support is fantastic, so they were resolved quickly.

    Translated from Dutch

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    Het luik zelf maar zeker ook de support is heel goed.

    Wij hebben het luik nu een klein jaar en zijn nu niet meer bang wat wij 's morgens aantreffen aan vogeltjes of muizen.
    Dat komt niet meer voor en het jagen daarop is ook enom afgenomen.
    In het begin waren er startprobleempjes maar de ondersteuning van onlycat is geweldig waardoor deze snel opgelost waren.

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