CalculatorExample answer
Litter boxes for a multi-floor, multi-cat home
Litter boxes: 4 boxesCalculated
3 cats + 1 = 4. The "one per cat, plus one" rule.
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Full result
Placement: Put at least one box on each of your 2 floors, in quiet, low-traffic spots away from food and water.Fact
Cleaning: Scoop at least once daily; empty and wash the whole box weekly.Fact
Watch for these
- If a cat SUDDENLY stops using the box, strains, cries, or passes blood, that is a medical red flag — a male cat unable to urinate is an emergency. This calculator is for setup, not for sudden avoidance.
Routine decision. You can act on this at your own pace.
How this was decided
- box count = cats + 1 (n+1 rule)
- at least one box per floor
- scoop daily, wash weekly
Sources
- Ohio State University Indoor Pet Initiative (T2 academic-veterinary); corroborated by AAFP (catvets intercat guide) and AAHA/AAFP Life Stage Guidelines · Tier 2 · verified 2026-07-17 · commercial bias noted · source conflict noted
Real questions cat owners ask
- How to litter train an 8 week old kitten?
- Cant get my new 8 week old kitten to use the litter box
- Help: my cat started peeing outside the litter box after adopting new kitten
Save your cat to My Cat to personalize this, or run it with your cat’s details.