For a typical setup: about a year of litter, twelve to eighteen box liners, twelve to twenty-six fountain filters, one or two grinder drums, and a clipper blade — plus whatever the machine you chose demands exclusively.
A rough shopping list, and the reason to check it before buying machines.
Litter
The largest line, and the one that varies most between clay, tofu and crystal.
Box liners or cassettes
Twelve to eighteen on a drum machine specifying a 20 to 30-day change. Ordinary bin bags on machines that take them.
Fountain filters
Two to four weeks each. Twelve to twenty-six per fountain per year, plus a washable foam pre-filter that lasts.
Grooming
A grinder drum or two, a clipper blade if you clip regularly, and guide combs that last for years.
The one that surprises people
Disposable litter trays, where the machine uses them. They are the single largest recurring cost in this catalog.
Last reviewed 2026-08-17