Guides
The parts of owning a litter box that no specification sheet covers. These are the questions people actually ask once the box is in the house, and a few they ask before they buy one.
If your cat has stopped using the box, start here: a cat straining to urinate and producing little or nothing is a veterinary emergency, not a behavioural problem. Urinary blockage kills within a day or two and is far more common in male cats. Read the medical causes first, then look at setup and behaviour.
All guides
How often to change litter
A realistic schedule for manual and automatic boxes, and what actually drives the smell.
Kitten training
Litter training a kitten, the right first tray, and when to move to an automatic box.
Peeing outside the box
The medical causes to rule out first, then the behavioural and setup fixes.
Mats and liners
Mats, liners and enclosures, and which of them an automatic box makes pointless.