A cat peeing outside the litter box is often signalling a medical problem (especially a urinary infection or blockage) or a litter-box issue it dislikes. See a vet first to rule out illness, then improve box cleanliness, number, location and litter type.
Rule out medical causes first
Sudden litter-box avoidance is frequently medical. Urinary tract infections, bladder inflammation, crystals or stones, kidney disease and diabetes all cause cats to urinate more, more painfully, or in unusual places. A male cat straining and producing little or no urine is a medical emergency. Always see your vet first before assuming the problem is behavioural.
Litter-box problems cats hate
Once illness is ruled out, look at the box from the cat’s view. Common turn-offs are a dirty box, too few boxes (the rule is one per cat plus one), a hooded box that traps smell, a liner or scented litter the cat dislikes, a box placed in a busy or noisy spot, or one next to food and water. Cats are particular, and any of these can push them to go elsewhere.
How to fix it
Scoop daily and do regular full changes. Add boxes so there is one per cat plus a spare, spread around the home. Try a large, uncovered box with unscented clumping litter. Move boxes away from appliances, food and high-traffic areas. Clean every accident spot with an enzyme cleaner so scent does not draw the cat back. In multi-cat homes, reduce competition and stress. If anxiety is involved, your vet or a behaviourist can help.
This is informational only. Because urinary problems can be serious and even life-threatening in cats, always consult your vet promptly when litter-box habits change.
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