Check out the video below on how to train or re-train your cat to use a litter box in order to prevent it house soiling.
Get The Best Cat Litter
You need to find cat litter that does its job well. Don’t go with the options that are super cheap because those products don’t do good at clumping together.
When your cat uses the litter box, you want them to have enough in it to cover their excrement or urine so that you can then clean it later since it will clump up. If you go with a cheap option, even if the cat uses the box properly you’ll have a hard time scooping out the litter box. There are plenty of brands so shop around and find what works best in your situation.