Long story, but the simple version is that I had a decorative rock sitting on a shelf above the toilet and I think my hubby was playing his music just a little too load and it rattled off......anyway, I didn't realize it was in there when I flushed the toilet. So, since we've been having trouble with it for years any way and now we had a rock stuck in it ,we decided it was time for a new one. While we were getting everything ready and out of the boxes, our cat Oreo decided it was his new sleeping spot. We had a aweful time getting him out of it. Hopefully he doesn't try this whenit's full of water!