Toby got into the closet where I keep the bag of litter. He tore it open and some spilled out. Then, evidently, he peed in it! Now there is a dried, hard clump of litter on the carpet in the closet. (less than a cup). I guess he figured "hey, this is litter, this is where I go" He's got 2 litter boxes, one on each side of the house, and he's never missed.
I guess I should count my blessings that he associates litter as where he should do his business.
Luckily it's in a closet. Any idea how to dissolve and chip this thing up, as it seems to be one with the carpet?