If you want your cat to use the litter box when needed, first and foremost, you need to have lots of patience. Depending on your kitty's personality, the process can be quick or take a bit longer.

We have a 16-year-old indoor/outdoor cat named Socks who is not litter box-trained. He has always used the outdoors. He is getting frailer, and we anticipate a time when he won't be able to go outside ...