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.

A file photo of a cat using the toilet. The internet has been left in stitches after a picture of a cat who taught himself to use the bathroom captured viral attention.