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
OnlyCat - Microchip Cat Flap with Prey Detection - Image 4

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. Tony – Trustpilot

    Simply the best money we’ve ever spent

    Simply the best money we’ve ever spent. The best aftercare as well. Could not recommend highly enough.

  2. admin offices – Trustpilot

    Absolutely love the OnlyCat cat flap for little Rita

    Absolutely love the OnlyCat cat flap, it gives me so much peace of mind knowing I don’t have to wake up to mice in the house. Overall a great product and the online support is very helpful too as and when I need it. Thank you ☺️

  3. Isabel Jäger – Trustpilot

    So far I've had very good experiences…

    So far my experience with the cat flap has been very good. I have two very industrious hunters
    I'm just not getting on SO well with the app yet
    But the flap is great

    Translated from German

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    Bis her habe ich sehr gute Erfahrungen…

    Bis her habe ich sehr gute Erfahrungen mit der Katzenklappe. Ich habe zwei sehr fleißige Jäger
    Nur mit der App komme ich noch nicht SO gut zurecht
    Aber die Klappe ist toll

  4. Gerhard Kraus – Trustpilot

    The flap works perfectly!

    The flap works perfectly!
    It would be great if you could select several activities and delete them all at once. As it is, you have to delete each one individually.

    Translated from German

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    Die Klappe funktioniert perfekt!

    Die Klappe funktioniert perfekt!
    Es wäre toll, wenn man mehrere Aktivitäten markieren und auf einmal löschen könnte. So muss man jede einzeln löschen.

  5. L Parker – Trustpilot

    Best purchase EVER

    Best purchase EVER. No more chasing mice around the house or waking up to half eaten remains on the sacrificial step!

  6. Happily mouse-free – Trustpilot

    Quick learner

    We bought the Onlycat flap in December to stop accidentally stepping into dead mice in the morning or having to chase living mice through the house, which happened 3-4 times per week. It was delivered from the UK to EU within the predicted time frame. Installation was unproblematic (needed some creativity to get an electric line there, but otherwise no issue). The cat didn’t mind the switch at all… until he tried to get in with the first mouse. He tried to get in with four separate mice (8 tries, then 4, then 2) and has since stopped trying to smuggle mice into the house. All cases were detected correctly. Sometimes a single frame of the video seems to have been flagged as (false) positive, but as this occured while the cat was already in transit, he wasn’t denied entry erroneously. Fixed by lopping of one protruding branch of a bush in front of the flap. Only negative – our cat could hear the old flap unlock early in the morning. As the Onlycat makes no sound, he is unsure when he can leave and sometimes tries the flap every few seconds for an hour or more, which must be frustrating to him.

  7. Kate Slater – Trustpilot

    No-brainer purchase for any cat owner - 5 ⭐️⭐️⭐️⭐️⭐️

    It is no exaggeration that buying the Onlycat cat flap has been by far my best and most worthwhile purchase for years. The daily gifts, dead or alive were really depressing me. It allows our cats to still enjoy their freedom but we have the comfort of knowing who is in or out, along with keeping an aggressive neighbouring cat locked out. The system works like a dream and should you have any queries or are in need of adjustments, there is a really friendly team very quick to respond and help and deserve a huge thank you for such a fantastic invention. My only regret is that it’s not been available for years – we are recommending to every cat owner we know.

  8. Amanda – Trustpilot

    Thwarted cat!

    I had seen previous Facebook ads from onlycat saying it was in development and I thought, yeah I bet.
    So then the ads turned into ads for the final article being available. It was expensive but my furry ginger multi murderer really needed to stop leaving bits of his prey lying around for me to step in and I wondered if it might reduce his hunting altogether.
    Umming and ahhhing for a while and reading lots of reviews I spent my hard earned £££ and hoped for a miracle.
    Said miracle was soon installed and hey presto, no more cat bringing a ‘friend’ into the house.
    This evening the colour on the colour strip changed from its usual green into a blue dot and I wondered if there was a problem so I emailed them for help. On a Sunday evening. I got a reply. On a sunday evening. All credit to them for excellent customer service.
    It works, its great no, its really great. My cat is totally thwarted 🙂

  9. Alexandra Beaufoy – Trustpilot

    Best money ever spent

    This has transformed our lives. No more unwanted presents and we also know which cat is the culprit

  10. Silvia Lebosi – Google

    This cat flap is a real game-changer! Absolutely thrilled!!

    Translated from German by Google

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    Diese Katzenklappe ist ein wahrer Gamechanger! Absolut begeistert!!

  11. Georg Bisinger – Google

    We've been using the cat flap for about six months now, and it's been a great success. We've had various intruders, including our cats and mice, all of which were recognized and denied entry.

    As of now, the cat flap is worth every penny.

    Translated from German by Google

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    Wir haben die Klappe seit circa einem halben Jahr jetzt im Einsatz und der Erfolg ist hervorragend. Wir hatten verschiedene Eindringling. Versuche unsere Katzen mit Mäusen, die allesamt erkannt und der Eintritt verwehrt wurde.
    Aktueller Stand ist der, dass die Klappe jeden Cent wert ist.

  12. Günter Herkner – Google

    Fast and competent online service.

    The cat flap does what it's supposed to; it keeps all animals out.

    Translated from German by Google

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    Online Service schnell und kompetent.
    Die Katzenklappe macht was sie soll lässt keine lässt keine Tiere zu.

  13. Karin – Google

    Easy installation, fast response time of the flap. It opens immediately if no prey is brought in and reliably locks when my cats want to bring back a mouse. No more nighttime meowing and smacking under the bed. Great!

    Translated from German by Google

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    Einfache Installation, schnelle Reaktionszeit der Klappe. Sie öffnet sofort, wenn keine Beute gebracht wird und blockiert zuverlässig wenn meine Katzen eine Maus bringen wollen. Kein nächtliches Miauen und Schmatzen unter dem Bett mehr. Großartig!

  14. Angelika Weichselbaum – Google

    Excellent cat flap. Especially since our house is now mouse-free again. Wonderful! I highly recommend it. Works perfectly.

    Translated from German by Google

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    Sehr gute Katzenklappe. Vor allem weil unser Haus jetzt wieder Maus frei ist. Herrlich. Kann ich nur empfehlen. Funktioniert super

  15. Sophie Lamb – Google

    I splashed out after my boy brought a live rat inside. 6 months in and I’m soooooo glad I did. It works a treat and stops him in his tracks.
    It also stops the neighbours cat coming in.
    Photo attached by Sophie LambPhoto attached by Sophie LambPhoto attached by Sophie LambPhoto attached by Sophie Lamb

  16. Dean Henshaw – Google

    Fantastic bit of kit keeps 100% intruders & contraband out … well worth the money 💴 …

  17. Ral Fis – Google

    We have two cats and the flap works perfectly fine. No mice or birds anymore

  18. Jonatan Lindell – Google

    Fantastic innovation! Our Onlycat has saved us lots of time and worries, no more searching for alive or dead prey in the house.

  19. Rosario Aguilar – Google

    This is an amazing way of keeping unwanted gifts from coming into the house. I can also monitor the coming and going of the kitties. Customer service is excellent and product reliable!

  20. Anna Humphrey – Google

    Game changer! We were concerned how well it would work and how our cat would adapt to it. It’s been 100% correct and our cat has very quickly adapted to it. He still tries to bring things in and it never lets him. It hasn’t put him off coming home. Very quickly after attempting to come in with ‘contraband’ He gives up and comes in. We have also enjoyed watching the videos of him attempting to bring things in . Well worth money!
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