Try looking up "Rescue Remedy" it's a Bach flower treatment used by a no kill cat shelter I know of to help socialize ferral cats. It's all natural, and I've seen it work, and I think definatly worth a try.

Nope not spite, your kitty like the the towels better than the litterbox. Cat's are very particular, if their litter box isn't up to their specs they'll find someplace out to use. Try a few things, if it's a covered box- take the lid off, keep nice c...