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

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. Crispian T – Email

    Thank you, thank you, thank you!

    We have just returned home from a week away, in Vermont to a house devoid of wildlife 🙂

    Walter tried to bring in prey on six different occasions while we were away- and was denied access every time. It was such a blast to wake up and sit on my deck hundreds of miles away and drink coffee and watch the videos of Walter trying unsuccessfully to bring in rodents (and then to see him come back later, without anything in his mouth, and be allowed in).

    You have created something wonderful!

  2. Darceys mum – Trustpilot

    OnlyCat Lifetime Subscriber

    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!
  3. Amanda Jane – Trustpilot

    Amazing product

    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.
  4. Katie G – Customer message

    I was sceptical – but this gadget is turning out to be a godsend! OnlyCat even contacted me to get all set up with my cats names etc, cannot fault the service so far. Mittens and Marmalade are just over 1 year old and in their prime, we have fields at the back of the house and honestly the remnants everywhere when I got home from work was starting to really grind me down. £400 seemed like a big gamble but I can honestly say it’s thwarted every attempt so far and my carpets are forever grateful. 🙏
  5. Sarah T – Customer message

    Quick shoutout to the OC team who have been AMAZING on support (late and weekend hours). Not only a great product but great customer service too. 😍
  6. Mo V – Customer message

    Ready, steady… Gone!

    OnlyCat installed and working great. Both cats happy with the switch from Sureflap. Support has been excellent and the build quality is great.

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