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Most litter box advice is about size and sides. For a Devon Rex, two less obvious factors matter just as much: warmth and skin. This small, curly-coated breed has a thin coat with few guard hairs, feels the cold more than most cats, and often has delicate, slightly oily skin. A box placed in a chilly utility room or filled with dusty, perfumed litter can put a Devon off, even if the box itself is perfectly sized.
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Quick answer: For most people in 2026, the best cat litter box for devon rex 2026 is the Medium-large open box, 5-7 in sides — our #1 rated choice. See the full ranked comparison, alternatives and buying advice below.
Sizing a box for a small, active cat
Devons usually weigh 5-10 lb with a slender, fine-boned body. A box about 18-22 inches long and 14-16 inches wide is usually enough. Devons are athletic and nimble, so they have no trouble with standard 5-7 inch sides. They are also curious and playful, and some treat the litter box as a sandbox, so moderately high sides help contain scatter.
Arm and Hammer Large Sifting Cat Litter Box with Microban
Included for 'Best Cat Litter Box for Devon Rex 2026' as a relevant option in this category; details come from the product listing.
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Powools Stainless Steel Cat Litter Box, High-Sided, Grey, M (1 Pack)
Included for 'Best Cat Litter Box for Devon Rex 2026' because the listing specifies High-Sided and Grey, details this guide uses to compare options.
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RIZZARI Cat Litter Box Anti-Scatter: Open-Room for Large Cats & Multi-Home
Included for 'Best Cat Litter Box for Devon Rex 2026' as a relevant option in this category; details come from the product listing.
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Arm & Hammer Rimmed Open Cat Litter Box, Wave with High Sides, High Sided Cat Litter Pan, Made in USA, Gray
Included for 'Best Cat Litter Box for Devon Rex 2026' because the listing specifies Wave with High Sides and High Sided Cat Litter Pan, details this guide uses to compare options.
View on AmazonOne caution: patellar luxation (slipping kneecaps) and hip problems are reported in the breed. If your Devon ever starts hesitating at the box edge, or you notice skipping on a back leg, switch to a lower-entry box and see your vet.
Warmth: the overlooked factor
See also: How to Pick a Heating Pad for an Arthritic Senior Dog • How to Transition a Picky Cat to a New Food
Devon Rex cats seek heat constantly. They sleep under blankets, on laptops and next to radiators. A litter box in a cold basement, garage or drafty laundry room can be an unpleasant place to visit, especially in winter. Some Devons will hold on too long or choose a warmer spot, such as a bath mat. Place the box in a room kept at normal living temperature and away from outside doors and floor-level drafts.
Litter for sensitive skin
The Devon’s short, wavy coat does not cover the skin as fully as a normal coat, particularly on the belly, inner legs and chest, where some Devons are nearly bare. Litter dust and fragrances come into more direct contact with the skin. Choose an unscented, low-dust clumping litter. Some owners find softer, fine-grained litters kinder to bare paws. If you notice redness on the belly or paws, or your cat licking its feet after using the box, discuss skin sensitivity with your vet and try a different litter type.
Devons often have oily skin, and fine litter particles can cling to oily paw pads and bare patches. A mat outside the box and occasionally wiping the paws helps.
Box and litter options for a Devon Rex
| Option | Suitability for a Devon | Why |
|---|---|---|
| Medium-large open box, 5-7 in sides | Excellent | Easy access, contains playful digging |
| Hooded box | Good | Traps warmth and reduces drafts; keep very clean |
| Top-entry box | Good for healthy adults | Nimble cats manage the jump; avoid with knee problems |
| Unscented low-dust clumping litter | Excellent | Gentle on exposed skin and airways |
| Heavily scented litter | Poor | Fragrance can irritate skin and deter use |
| Box in a cold garage or basement | Poor | Cold-sensitive breed may avoid it |
A hooded box can suit this breed
For many breeds, hoods are optional or even disliked. For a Devon, a hood can offer a small advantage by cutting drafts and holding a little warmth. Devons are generally confident and people-focused, so they are less likely to feel trapped than a shy breed. The trade-off is odor, which builds up under a hood; scoop at least daily and wash the box regularly.
Cleanliness and routine
Scoop once or twice a day. Replace the litter completely every two to four weeks and wash the box with mild, unscented soap. In multi-cat homes, follow the one-per-cat-plus-one rule. Devons are sociable and usually cope well with other pets, but a clean box in a warm, quiet spot is still the best way to prevent accidents.
When to call the vet
Straining, frequent trips, blood in the urine or going outside the box are reasons to see your vet. So is persistent redness, crusting or licking on the belly or paws, which could indicate a skin problem worsened by contact with litter.
FAQ
Why does my Devon Rex pee on the bath mat?
Soft, warm surfaces are attractive to this heat-seeking breed, particularly if the litter box is in a cold spot. Rule out a medical problem with your vet, then move the box somewhere warmer and make sure it is spotless.
What litter is best for a Devon Rex?
An unscented, low-dust clumping litter is a good starting point. If your cat shows skin irritation, try a softer or different material and ask your vet for advice.
Bottom line
A Devon Rex needs a medium-large box of about 18-22 inches, unscented low-dust litter that is gentle on its exposed skin, and a location that is warm and draft-free. A hooded box can work well for this confident, cold-sensitive breed. Keep it clean and watch the skin on the belly and paws for signs of irritation.
Ready to decide? Our #1 pick for 2026 is the Medium-large open box, 5-7 in sides.
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