What specific numerical guideline regarding litter box quantity is advised for creating a cat-friendly habitat for FIC-prone cats?
Answer
The N+1 rule.
The N+1 rule is a specific environmental recommendation pertaining to litter box availability, where N represents the total number of cats in the household. This guideline dictates that owners should provide one additional litter box beyond that number (e.g., two cats require three boxes). Providing surplus, clean, unscented litter boxes in quiet, low-traffic areas is critical because cats with FIC may associate pain with using a dirty box or may avoid locations where they could be ambushed or startled by other household pets.

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