More cats do not just add up, they multiply the odor. More waste, more boxes, and more ammonia in the same air, usually in a home that is not any bigger. What keeps one cat’s box fresh gets overrun in a two or three cat house, and the smell can go from fine to rough in a single busy day. Multi-cat homes need a plan, not just a product bought in a panic.
These posts take the extra load head-on: how many boxes to run, which is usually one per cat plus a spare, how to keep each one under control, and how to trap odor when the box never gets a break. Activated carbon helps most here because heavy use is exactly where masking scents give up fastest. Lead with the featured posts, then let the related links carry you into ammonia control and cleaning routines built for a busy household.