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If your cat lifts the kitchen bin lid, look for a lock you can deliberately engage. A pedal or soft-close lid makes a bin convenient to use, but neither is a substitute for a latch. Our shortlist contains three simplehuman plastic bins with sliding lid locks, in different shapes and capacities.
Start with the 40L slim CW1361 for a narrow kitchen gap. Choose the 50L semi-round CW1355 for a larger household. The 45L rectangular CW1371 is an alternative when you need a shallower footprint, with an important returns notice to check below. Paying more here buys capacity or a different shape, not a guarantee against every cat.
All three had an in-stock, Prime-eligible Amazon UK offer when checked on 1 October 2026. Prime eligibility and delivery depend on your address and selected seller. These are researched recommendations, not hands-on cat-proofing tests.
Best cat-proof bins UK: quick comparison
| Pick | Why choose it? |
|---|---|
| Value / narrow spaces simplehuman CW1361 40L slim (Ad) | Sliding lid lock, narrow body and built-in wheels. Check: its depth and room to open the lid. |
| Larger households simplehuman CW1355 50L semi-round (Ad) | Sliding lid lock and the largest capacity in this shortlist. Check: the wider footprint and how often you empty food waste. |
| Rectangular alternative simplehuman CW1371 45L rectangular (Ad) | Sliding lid lock and a shallower rectangular shape. Check: Amazon displayed a “frequently returned item” notice when reviewed. |
Why three from one brand? These particular models offer the lid-lock mechanism we are looking for. We would rather compare useful sizes than add an ordinary swing-top or sensor bin just to include another brand.
1. simplehuman CW1361 40L slim bin: our value pick
Buy this if: your cat paws at the lid and your kitchen has a narrow space beside a cupboard or appliance.
A 40L plastic pedal bin with a sliding lid lock and built-in wheels. Choose it for a narrow gap, but measure the depth and engage the lock after each use.
The black CW1361 combines a sliding lid lock with a pedal, soft-close lid and built-in wheels. Its listed external dimensions are 26 cm wide × 49 cm deep × 64 cm high. That narrow width is its main advantage over the other two bins.
We would start here for a smaller kitchen, provided the 49 cm depth fits. The wheels help when pulling it out for cleaning, but the bin still needs a stable position where your cat cannot easily push it around. Keep enough clearance above it for the lid to open fully.
The catch: narrow does not mean small in every direction. It can project further into the room than the rectangular model, and you must slide the lock into place after use. The stay-open feature is handy when changing bags; close and relock the lid afterwards.
Our verdict: the lowest-priced option at our check and the most useful starting point for a narrow gap. Compare the current offer below, as the price order can change.
2. simplehuman CW1355 50L semi-round bin: best for larger households
Buy this if: a 40L bin fills too quickly and you have room for a wider body.
A 50L plastic bin with a sliding lid lock, steel pedal and soft-close lid. Choose it for extra capacity; its wider semi-round shape needs more floor space.
The black CW1355 offers 50L capacity, a sliding lid lock, steel pedal and soft-close lid. The listing gives external dimensions of approximately 48 cm wide × 35.5 cm deep × 67.3 cm high. Its semi-round shape has a flat back for placement against a wall.
Choose it over the slim bin when capacity matters more than squeezing into a narrow gap. It is wider but shallower on the listed measurements. Measure the space with the lid open too, especially if the bin will sit under a worktop overhang.
The catch: a larger bin can encourage you to leave rubbish longer. Empty food waste regularly even when the bag is not full, and do not expect the lid lock to make the contents odour-free. It is a plastic-bodied bin; the steel pedal does not mean a stainless-steel body.
Our verdict: our larger-household pick. The extra capacity is a sensible reason to spend more if you will use it; the smaller bin has the same type of security feature.
3. simplehuman CW1371 45L rectangular bin: a shallower alternative
Buy this if: the slim model projects too far into your kitchen and a rectangular footprint fits better.
The black CW1371 has a sliding lid lock, steel pedal and soft-close lid. Its listed external dimensions are about 40.5 cm wide × 35 cm deep × 64 cm high, with approximately 93.5 cm height needed when the lid is open. The 45L capacity sits between the other two recommendations.
Important buying check: Amazon showed a “frequently returned item” notice on this listing when we reviewed it. We have not established why customers returned it. Read recent reviews for the exact variant, confirm the dimensions and check the return terms before ordering. This is why it is an alternative in our shortlist rather than our default recommendation.
Our verdict: worth comparing if this shape fits your room better. Choose the slim or 50L model instead if their dimensions work and you prefer to avoid the current returns flag.
What makes a kitchen bin harder for a cat to open?
A mechanical lid lock comes first. Look for a catch that holds the lid shut, rather than wording such as “soft close”, “touch top” or “pet-friendly”. Check that the exact size and colour you select includes the lock: features can differ across a brand’s range.
Then check stability and access. A locked lid does not stop a lightweight bin tipping over. Position it on a level floor, away from chairs or stools that give your cat easy access to the lid. If your cat moves or defeats the bin, keeping it inside a securely latched cupboard or behind a closed door may be the better solution.
Make the lock part of the routine. Check it with a gentle lift of the lid after closing. Keep the rim clean, tuck the liner inside so it does not obstruct the closure, and empty the bag before rubbish prevents the lid seating properly. Check the recommended liner size and ongoing bag cost before buying.
Keeping cats out of kitchen rubbish
Seal food scraps and put them into your secure waste container promptly. Keep medicines, cleaning chemicals, string and other potentially harmful waste out of reach; a household bin is not a safe storage box for hazardous items. If you think your cat has swallowed something harmful, PDSA advises contacting your vet immediately. Do not try to make your cat vomit unless your vet tells you to.
If your cat also raids food packets, our cat food storage container guide covers securing their own food between meals.
Cat-proof bins UK: frequently asked questions
Is any bin completely cat-proof?
We cannot guarantee that a bin will defeat every cat. A deliberately engaged lid lock is a useful barrier to lid lifting, but the bin still needs stable placement and a properly closed lid. For a persistent cat, use a secure cupboard or a room they cannot enter.
Are pedal bins or sensor bins cat-proof?
Not simply because they use a pedal or sensor. Those mechanisms open the lid; they do not necessarily lock it shut. Choose a model with a separate lock if lid lifting is the problem. A soft-close mechanism controls how the lid closes.
Which size should I buy: 40L, 45L or 50L?
Choose the shape that fits your kitchen first. The 40L slim model suits a narrow gap; the 45L rectangular model suits a shallower space; the 50L semi-round model adds capacity for a larger household. Measure the external footprint, lid clearance and route for removing a full bag.
Are these bins available with Amazon Prime?
All three showed an in-stock Prime-eligible offer on Amazon UK at our 1 October 2026 check. Confirm the seller, selected variant, Prime eligibility and delivery date shown for your address before ordering.
How we chose these bins
We compared Amazon UK listings for the exact black CW1361, CW1355 and CW1371 models, checking lid-lock descriptions, dimensions, stock and Prime offers. We also checked simplehuman’s 40L slim support page, 50L semi-round support page and 45L rectangular product page. Recommendations reflect buyer fit and advertised mechanisms, not laboratory or hands-on testing.