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

(646 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

646 owner reviews4.88/5

  1. Dick van de Kamp – Email

    I must say that i’m very enthusiastic about Only Cat! In the short period installed it already prevented a few times unwanted prey, so many thanks for bringing this product to market.

  2. Sarah Clifford – Trustpilot

    This product is utter genius

    This product is utter genius. We have been saved the nightmare if scurrying around chasing the ‘gifts’ from our cats. Cannot recommend it highly enough. It has made family life a lot happier as we aren’t spending hours trying to catch a mouse from under the sofa or a live bird from under the bed (actually happened!). The team are really responsive. They have a high demand for the product so I would recommend getting on their list ASAP.

  3. Matt Isaac – Indiegogo

    We’ve had ours for about a month now and I can say is this has been flawless. No mice or birds at all and lots of “access denied”. Worth every penny

  4. Fatima Begum – Google

    A device that’s given me my life back. Free to finally enjoy outings and holidays without worrying. No more living in fear. The Onlycat team is amazing.

  5. L porquai – Google

    So happy with this purchase…After most days coming home finding mice,rats on my carpets …I love my cat but I couldn’t cope with the presents…..now I feel so much better
    I can now just find these presents outside and deal with it …
    My cat tried to bring a bird in other day… and the flap did exactly what it was supposed too..I was so happy ..
    Very good investment, I’m so happy ..the team have been great also answering my emails ..as I had alot of questions..
    Thank you 😊

  6. Sarah Clifford – Google

    I cannot recommend this product highly enough. Our cat tried 16 times the other morning to bring a gift in. Waking up and looking at the app to see we have avoided midnight carnage is just amazing. The company are incredibly helpful and responsive. Just can’t thank them enough!

  7. Louise Thompson – Google

    Since this was installed only two weeks ago our home life has changed significantly. Finding live and half-eaten prey all round my house on a daily basis was getting me down. I used to dread coming home from work or waking up to what i was going to find. That worry has gone and with a small child i was worrying from a hygiene perspective. I had tried everything possible, collars with big bells, – he chewed them off, locking him in at night – he cried all night long, he just wanted to be out doing what cats do. This catflap means i can see my cats movements with the exit/entry footage, I know if he is in or out, how long he is out when he is roaming, its given me a better sense of his routine. An alert is sent if the catflap detects and or even suspects prey is close to the catflap. I cannot recommend this product enough. I purchased the full subscription package and its the best money I have spent in a long time.
    I hope you are just as happy with your purchase.

  8. Amanda J – Trustpilot

    Amazing product, the best investment I’ve made in years. This works, the inventors are brilliant at communication. I love the fact that not only does this product stop my cat from bringing in its prey, I can also track my cats movements day or night. My cat does not have other visiting cats or foxes through the cat flap. It may seem expensive but it’s worth every penny, knowing that you’re not going to be chasing that gift around your home for the next few days, or finding it dumped on your bed in the middle of the night😳 Peace of mind is priceless. Thank you to the team of OnlyCat.

  9. Martin K – Email

    OnlyCat continues to work its magic for us. I have been singing its praises to my work colleagues, one of whom has a cattery in France, and he is going to pass it on to his customers. So, if you start to get orders from the continent, that may be why.

  10. Alison P – Social media

    It certainly is life changing for us cat owners 😁

  11. Paul H – Email

    Dear team. I use onlycat for several weeks now. Almost everyday, your product saves me from bringing in [prey]. With this email I want to express my gratitude to the team. The product cat flap works as a charm!!!! Thank you so much!!

  12. Louise – Email

    I have to say this invention is incredible and my home life has changed overnight, if there is anything I can do to review, post or comment please just let me know.

  13. Darcey’s Mum – Trustpilot

    Since being installed in May 2024 i have had zero gifts in the house. At least 100 attempts have all been detected, the product is fantastic. Well worth the wait. The team are quick to respond to any questions, they really know their product.
    Thank you for changing our lives!

  14. Christopher R – Social media

    Had ours for just over a month. It’s been a complete game changer in that we can sleep at night knowing Opal won’t be bringing any ‘friends’ back for a party in our bedroom! We now find the bodies on the driveway instead…

  15. Darren S – Social media

    Ps the onlycat has been so reliable, it’s unbelievable. Best. Thing. Ever.

  16. Amanda S – Indiegogo

    As you are probably aware, my OnlyCat is continuing to be a great success, correctly rejecting contraband and unwanted feline intruders while allowing my cats unfettered luggage-free access… I’m so glad to be removing a pile of corpses from outside the back door now instead of from various hidey-holes around the house!

  17. Tom – Email

    Yes, all setup and really easy. Just worked straight away. After only a few nights our cat tried to bring in prey and it was identified and stopped. He tried again a few days later, twice, and again he was stopped. So far it’s working better than expected.

  18. Sam G – Social media

    I still get childishly excited whenever I see contraband detected on my app (and I’ve had many of them!), it’s a hell of a feeling, knowing what you’ve avoided having to chase/cleanup ❤️❤️❤️

  19. Clive R – Email

    The cat flap has been working well and had prevented several “gifts” being brought in for us, some so small I was amazed that the camera saw them. We are very impressed.

  20. Andrew T – Social media

    I’m similarly impressed. The system has only been foiled once and the amazing team at onlycat instantly fed that learning into the machine. My two are prolific, murderous trash pandas and barring when they work together, my hallway no longer smells of death and rotting frankfurters. 😆
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