For the cat, the litter box is not "the bathroom." It is the most vulnerable point of its day — when it stops, it is exposed, in balance, and for a few seconds, it cannot escape. Everything in its choice is guided by this logic. Understanding it helps to avoid the most frustrating problem for those living with a cat: the cat that stops using the litter box.
How Many Litter Boxes?
Veterinary behavioral golden rule: n+1, where n is the number of cats.- 1 cat → 2 litter boxes
- 2 cats → 3 litter boxes
- 3 cats → 4 litter boxes
Where to Place It
Three absolute criteria:- Quiet area — not in the main hallway, not near the washing machine or doors that slam
- Away from food — the cat doesn't want to eat where it eliminates (evolutionary inheritance: hides traces from predators)
- Clear escape routes — no blind corners, it must be able to flee if it hears sudden noises
- Garages, basements, dark stairs (especially for older cats)
- Near the heater (it dries out the litter too much)
- Cold rooms (cats reduce use)
Which Litter to Choose
Clumping Clay (bentonite)
The most common. Forms solid clumps on contact with urine, easy to remove. Pros: great odor control, easy to clean (partial weekly replacement) Cons: creates dust (watch out for asthmatic cats), not biodegradable, medium-high costSilica Litter (crystals)
Translucent white granules, absorb a lot. Pros: little dust, complete replacement every 3-4 weeks, lightweight Cons: some cats don't like the texture, higher costPlant-Based Litter (corn, tofu, wood, fiber)
Biodegradable materials, some can be flushed down the toilet (check instructions). Pros: eco-friendly, little dust, biodegradable Cons: higher cost, some cats don't like it (different texture)Health Indicator Silica Litter (crystals)
Changes color when urine is abnormal (sign of kidney problems, infections). Useful for monitoring. Pros: helps to intercept early medical problems Cons: high costThe Litter Box: Open or Closed?
It depends on the cat. Most prefer open litter boxes, spacious, low — because visibility is high. Closed boxes trap odors for us, but for the cat, they are claustrophobic "traps," especially if small. Compromise:- Covered litter box only if very large (at least 50×40 cm interior)
- Without a flap (the flap is the most hated thing by many cats)
- Carbon filter on top to absorb odors
Cleaning
Routine non-negotiable:- Every day: removal of clumps and feces (scooper)
- Weekly: partial sand replacement + washing walls with a neutral cleaner (never pure bleach: the chlorine smell repels the cat)
- Monthly: total sand replacement + deep cleaning
Why It Stops Using It
Five most common causes, in order of probability:- Dirty litter box. For the cat, a litter box with 2-3 clumps is "dirty." Not like for us.
- Sudden change of litter. Always transition over 7 days mixing old and new.
- Stress — new person in the house, moving, ongoing renovations, another animal arrived.
- Position changed or new litter box placed in an area where it doesn’t feel safe.
- Medical issue — cystitis (FLUTD), urinary infections, painful constipation, stones. Always the first thing to rule out with the veterinarian if the problem is sudden.
What to Do If It Poops Outside
- Urgent veterinarian visit — rule out medical problems
- Clean the soiled area with an enzymatic cleaner for cat urine (no bleach, no regular cleaners — the cat returns to the same spot)
- Add an extra litter box
- Change the litter (try the one it used before, if you’ve changed)
- Check for conflicts with other pets in the house
- Reduce environmental stress (private den, Feliway pheromones)