Fantastic product but not able to source replacement liners
Expensive, yes but does a great job at keeping things clean, offers privacy for your cat (some cats prefer this) and looks like new even after years. I have two and used to recommend them to everyone, but Zooplus haven't stocked the liners for over a year and Amazon charge £32 for 3 (was £6.99 for 1 here). You can use the box without a liner, but they keep the tray from getting scratched inside which minimises smells and cleaning time.