Cat Behavior HQ
Litter box satisfaction scorecard
8 questions. Full environmental analysis for your cat.
How many cats live in your home?
The number of cats directly determines the minimum number of boxes needed.
1 cat
2 cats
3 cats
4 or more cats
Question 1 of 8
How many litter boxes do you have in total?
The veterinary standard is one box per cat plus one extra. This is called the N+1 rule.
1 box
2 boxes
3 boxes
4 or more boxes
Question 2 of 8
Where are the litter boxes located?
Placement affects whether a cat feels safe enough to use the box.
Spread across different rooms or floors
Best practice. Each box feels like a separate territory.
Two or more in the same room
Acceptable but not ideal in multi-cat homes.
All in one spot, side by side
Risky. One dominant cat can guard the whole area.
Near the food and water bowls
Cats instinctively avoid eliminating near food. This causes avoidance.
Question 3 of 8
Are the boxes covered or open?
Covered boxes trap ammonia odors which are 14 times more powerful to a cat’s nose than to ours.
All open with no lids
Best for most cats. Good ventilation and full visibility.
A mix of covered and open
Good. Gives your cat the choice they prefer.
All covered with lids
Can cause avoidance due to trapped odors and reduced escape routes.
Question 4 of 8
What type of litter do you use?
Litter texture and scent are among the most common reasons cats avoid the box.
Unscented fine grain clumping
Closest to natural substrate. The gold standard for most cats.
Scented litter of any kind
Scent is added for the owner, not the cat. Many cats find it overwhelming.
Crystal or silica litter
Some cats tolerate it but the sharp texture can deter sensitive paws.
Pellet or recycled paper litter
Low dust but very different texture. Some cats refuse it entirely.
Question 5 of 8
How often do you scoop the litter box?
A cat’s sense of smell is 14 times stronger than a human’s. What smells fine to you may be unbearable to them.
At least once daily
Ideal. Most cats expect a clean box for every use.
Every 2 to 3 days
Borderline. Tolerated by some cats but not recommended.
Once a week or less
A significant cause of avoidance. Most cats will find alternatives.
Question 6 of 8
How old is your cat?
Age affects physical ability to reach and use the box comfortably.
Kitten under 1 year
Kittens may need a lower entry box and one close to their play area.
Adult 1 to 10 years
Standard setup works well for most adult cats.
Senior over 10 years
Arthritis is common in senior cats. High walls and distant boxes cause accidents.
Question 7 of 8
Has your cat had any accidents outside the box recently?
Recent accidents are the clearest signal that something in the current setup is not working.
No accidents at all
Your cat is currently happy with their setup.
Occasional accidents, once or twice
Worth investigating. Could be a preference issue or early medical sign.
Regular accidents happening now
Active problem. The box setup or a medical issue needs addressing urgently.
Question 8 of 8
score
From catbehaviorhq.com
The Science of Feline Territory: Why the N+1 Rule Matters
In feline ethology, a cat’s sense of security is tied directly to their access to resources. The N+1 Rule is a clinical standard: you should provide one litter box for every cat in the home, plus one extra.
Key Factors Influencing Your Score:
- Territorial Guarding: In multi-cat households, a “socially significant” cat may block access to a single box, forcing others to seek out “safe” spots like your carpet or furniture.
- The “Vulnerability” Instinct: Cats feel most vulnerable while eliminating. Covered/lidded boxes can make a cat feel “trapped” because they lack a 360-degree view of potential “threats” (like a pouncing housemate).
- Olfactory Sensitivity: Cats have a sense of smell roughly 14 times stronger than humans. If a box is lidded, it traps ammonia and odors inside, making the environment unbearable for the cat even if it smells “fine” to you.