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. Serge – Trustpilot

    Only cat has changed our lives in a…

    Only cat has changed our lives in a very good way. Never had to try and catch a mouse at three o clock at night since we installed only cat. It works flawlessly since the start. A very nice idea put perfectly into practice!!!

  2. Tania Arlett – Trustpilot

    Fantastic bit of kit

    Fantastic bit of kit. Had purchased from a competitor (many faults and ZERO customer service). Have had only 1 failed mouse entry and considering I have 4 cats and live in the country this is amazing!
    Response time on cat flap is really quick, the app is great, like the fact I can track who is in/out and that you can programme to play a little tune!
    If your cat is a fatty like Me Pickles they may struggle to fit, he’s 6kg and can just manage to get through! 🐱

  3. Henning Knuhtsen – Trustpilot

    We bought an OnlyCat in March

    We bought an OnlyCat in March. It was delivered from the UK to Denmark within the expected timeframe. The installation took a bit of creativity, as our old SureFlap cat flap was an XL size and the OnlyCat is one size smaller, but we managed it.
    It's a lot of money, but it's money well spent.
    The first time our cat tried to bring a mouse in, he was denied entry, and he hasn't tried since 👍
    Then there was another cat that tried to get in, but it was denied entry too.
    It works perfectly, so thanks to the team for developing OnlyCat.

    Translated from Danish

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    Vi købte en onlycat i marts

    Vi købte en onlycat i marts. Den blev leveret fra Storbritannien til Danmark inden for den forventede tidsramme. Installationen krævede lidt kreativitet da vores gamle sure flap kattelem var en størrelse XL, og onlycat var nummeret mindre, men det lykkedes.
    Det er mange penge, men de er godt givet ud.
    Første gang vores kat prøvede at tage en mus med ind, blev han nægtet adgang og siden har han ikke forsøgt 👍
    Så har der været en anden kat der har forsøgt at komme ind, men den blev nægtet adgang.
    Den virker perfekt, så tak til teamet for at udvikle onlycat.

  4. Jackie Greenwood – Trustpilot

    Worth every penny

    This is an expensive piece of kit but is it worth it? It most certainly is! I wish I had taken the plunge and bought it months ago when I first came across it. It is a lifesaver and anyone considering buying it will not be disappointed. It was super easy to slot into the hole where my previous cat flap was and I had it up and running in no time. The first contra band was detected that same evening and there have been no mice, dead or alive brought into my house ever since. Yes, it is expensive for a cat flap but worth every penny.

  5. SS – Trustpilot

    Solid company lovely product highly recommend

    This purchase was an absolute godsend. The product is exciting because it is improving and expanding in capacity all the time,as the developers are always improving it and definitely really seem to listen to their customers.
    We now have purchased 2 as we have a complicated feline situation and it really solves our issues. Emma at OnlyCat has helped us navigate our myriad of complicated ever evolving rules on multiple occasions so helpful and kind and also sharp as a tack programming what we need in seconds.

  6. ROMILLA WICKREMERATNE – Trustpilot

    It works very well

    It works very well. Has changed our mouse life. Great for letting you know whether cat is in or out as well

  7. oliver hicks – Trustpilot

    I was reluctant to buy it because of…

    I was reluctant to buy it because of the cost but after chasing a live rat around my front room I decided to buy it. I have to say it is brilliant. It works perfectly stopping unwanted cat presents which you would hope for the price but it’s the overall ease and functionality and quality of the cat flap and app that is so impressive. A really good product that is actually worth the money.

  8. Iman Syed – Trustpilot

    Awesome product

    Awesome product, my parents live in the countryside and our cats bringing in mice and rabbit was causing them so much heartache

    We’ve had it for a couple of years now and have experienced almost no false positive or negatives

    Genuinely game changing product

  9. Victoria Jenkins – Trustpilot

    This cat flap is brilliant

    This cat flap is brilliant, my cat was bringing in prey constantly, and this cat flap put a total stop to it. In over a year it’s blocked dozens of attempts from my cat, only missing one very small mouse that she has managed to hide almost completely in her mouth and was not easy to see, but everything else it’s blocked perfectly, as well as several attempts from the neighbours cats to sneak in. I’ve been recommending this to all the cat owners I know, worth the price.

  10. Giacomo Gori – Google

    Peace of mind guaranteed

    Translated from Italian by Google

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    Tranquillità garantita

  11. Stefan Wolf – Google

    The flap works perfectly.

    Translated from German by Google

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    Die Klappe funktioniert perfekt.

  12. Marike De Jong – Google

    Helps really well!

    Translated from Dutch by Google

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    Helpt super goed!

  13. Andreas Muehlmann – Google

    Works absolutely perfectly and reliably

    Translated from German by Google

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    Funktioniert absolut super und zuverlässig

  14. Matthias Schüle – Google

    Works perfectly, all animals are recognized

    Translated from German by Google

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    Funktioniert hervorragend, alle Tiere werden erkannt

    Photo attached by Matthias Schüle

  15. Lena Hultgren Løken – Google

    Works flawlessly! A really good investment, love it.

    Translated from Norwegian by Google

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    Fungerer feilfritt! En virkelig god investering, elsker den.

  16. Alisa B. – Google

    I love this product. Finally, I can sleep peacefully again.

    Translated from German by Google

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    Ich liebe dieses Produkt. Endlich wieder beruhigt schlafen.

  17. Den upptäcktsresande – Google

    I've had the slot for about a month, full pot! Kaj has tried to come in with a change 4 times and has been refused every time 😊
    So happy with the slot! …

    Translated from Swedish by Google

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    Har haft luckan i en månad ungefär, full pott! 4 gånger har Kaj försökt komma in med byte och blivit refuserad alla gånger 😊
    Är så nöjda med luckan! …

  18. Matthias Mariën – Google

    Great product! I would recommend everyone buy it.

    Translated from Dutch by Google

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    Top product! Ik zou het iedereen aanraden om het te kopen.

  19. Sarah Cavdar – Google

    We've had the cat flap for almost a year and it's never let us down. Best cat flap in the world! It would have been nice if it came in a larger size, as our Moggele doesn't like going through it. If a larger size is ever made, we'll definitely buy that one. 🥰 …

    Translated from German by Google

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    Wir haben die Katzenklappe seit fast einem Jahr und sie hat uns noch nie im Stich gelassen. Beste Katzenklappe der Welt. Wäre halt noch schön gewesen, wenn es diese auch noch eine Nummer größer geben hätte , da unser Moggele ungern durch geht. Sollte es diese mal noch größer geben, werde wir diese dann auch kaufen. 🥰 …

  20. Daniel Boeger – Google

    Great! It does what it's supposed to. The cat with prey can't get in, but without it can. And it does so reliably.

    Translated from German by Google

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    Super! Macht was es soll. Die Katze mit Beute kommt nicht rein, ohne aber schon. Und das zuverlässig.

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