I have a lovely Russian Blue kitty named Ziggy. He has the horrible habit of "wiping" his butt on my carpet. It isn't a regular thing, but sometimes it's like he has digested a lot of fur, and instead of coughing up a hairball, it comes out the other end, resulting in a "clingon" that he proceeds to scoot off his butt onto the carpet.
Yesterday morning I was in a hurry to leave, and as I reached the front door, I see a two and a half foot black streak on the carpet. Yep, it was a poop strip. I didn't have time to get it up then, so when I got home had to get a scrub brush and brush it up. Thank goodness, it wasn't too thick, and basically turned to dust when brushed. Then I could vacuum and use the carpet cleaner on it.
I know he can't really help it, but it's gross. Whenever we happen to catch him doing it, we holler, "Wiper, No Wiping!!!" (As in "Swiper, No swiping!" from Dora the Explorer).