my cat has been sprinting around like that and spent the day upstairs. but we've got some bad thunderstorms coming through right now, so that's probably it.

good question about the cleaning products. sounds silly, but crawl around your living room and see if there's some bugs or something that could've frightened him. if he's going out to eat and using the litter box, that's good.

give him another day or so...hopefully he'll be back to normal (or at least cat normal, lol)