A single-cat home can stay lean: one litter box , one scratching post and one high resting spot cover most daily needs.

Multi-cat homes should follow the idea of resources equal to cats plus one for boxes, bowls and resting spots, spread across rooms so no single cat can guard a choke point.

Automated devices gain value in multi-cat homes: an auto box reduces scooping conflicts and an auto feeder allows split feeding, but confirm identification and capacity.

Budget should go to resource density and vertical space before duplicate toys. Persistent conflict needs behaviour professional input.