LitterPilot tool

Multi-Cat Litter Box Calculator

Estimate how often you’ll empty a self-cleaning drawer — and whether one automatic box is enough for your household.

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Your household

How this estimate works

Marketing often promises “weeks” between emptying. We model real drawer pressure instead:

  • Uses per cat per day: about 3–4 (urine clumps + solids, average adult cat).
  • Drawer capacity: compact ≈ 12 uses · mid ≈ 20 · large ≈ 30 before odor or “full” alerts kick in for most owners.
  • Apartment penalty: we cut comfortable days by ~25% because smell shows sooner in small rooms.
  • Stations: one mid drawer usually covers 1–2 cats if you empty on schedule. Three or more cats almost always need a second station.

This is a planning tool, not a lab measurement. If your cats are high-volume drinkers or you share one enclosed globe, empty sooner than the estimate.

What we recommend after you calculate

  • 1–2 cats: one open-top automatic box — our pick is the Neakasa M1 Plus.
  • Testing the budget first: Bartuke to see if cats accept a motor.
  • 3+ cats or need a silent backup: add a second station or a Less Litter stainless pan so a blocked cat has somewhere to go.

Full context: best litter box for multiple cats · ranked automatic picks.

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