How often should you fully replace cat litter?

Every cat parent needs to know these common cat litter issues!

How often should you fully replace cat litter?

A full litter change is recommended every two weeks. When replacing all litter, thoroughly wash and disinfect the litter box. If you scoop waste, deodorize and sanitize regularly day-to-day, you won’t need to fully swap litter too often.

Common litter types on the market include clay litter, tofu litter, mixed litter and mineral litter. The exact replacement schedule depends on which litter you use and your daily cat-care routine.

Risks of Not Replacing Cat Litter on Time

1. Strong mixed odors: weird sweet yet stinky smells will fill your whole house.
2. Litter box avoidance: your cat may refuse to use the tray and relieve themselves elsewhere around the home.
3. Harmful bacteria buildup: cats constantly groom their paws, so they will ingest bacteria while licking their feet, which damages their health. Worse, low-quality unqualified cat litter may contain aflatoxin—a severe health hazard for felines. Always pick cat litter with caution.

How to Switch to a New Type of Cat Litter

Take a gradual transition approach: mix small amounts of new litter into the old batch, then slowly raise the proportion of new litter over time, letting your cat get used to the new texture and scent step by step.

Adjust the timeline based on your cat’s personal habits. If barely any old litter is left, you can replace it entirely with new litter in one go.