PetSafe ScoopFree uses a rake and disposable trays, often with crystal litter. It can be simpler to set up but has ongoing tray costs. Some cats do not like crystal litter.

Who it is for: owners who do not mind buying trays and want less mess.

• Pros: simple, tidy disposal.
• Cons: ongoing tray costs, and not all cats accept crystal litter.

Verdict: practical if you accept the running costs.

Based on specs and verified buyer reviews, not our own testing. Specs and prices change, so check the current listing on Amazon. As an Amazon Associate I earn from qualifying purchases.