Related: How to Clean Cat Pee From a Carpet + Why Scrubbing Actually Makes the Odor Worse In the years since Mingus published his guide, toilet training cats has come up repeatedly. Robert De Niro ...

So understandably, toilet-training cats burst into the scene in the early 2010s, products like Litter Kwitter promising that your cat will be toilet trained within six weeks. Here’s how it works.

The second, "Toilet Train Your Cat, Plain and Simple," is by Clifford Brooks, a Silicon Valley writer who says the process takes three months and loads of patience but is well worth it.

Her cat, Reilly, didn’t want to go on torn-up newspaper. And so, nary a week in, we reinstituted the Pine Pellet sawdust that Reilly trusted and that Madden hoped would not gunk up her pipes.

The second, Toilet Train Your Cat, Plain and Simple, is by Clifford Brooks, a Silicon Valley writer who says the process takes three months and loads of patience but is well worth it.