Vinegar isn't harmful, but the smell might put the cat off wanting to use the litterbox. Just use regular soapy water...you can add some baking soda for extra cleaning and odour removal.
lol, uhm Roxane, I believe Cassie was simply pointing out that the question was phrased in a confusing manner. It sounds like you're asking if your cat would do the washing of the box.
what would you recommend for me toawash her litter box? confused a bit . Not it isn't good?
I'd be impressed if my cat was washing a litterbox with anything. Vinegar or not.
vinager works great for me!
thanks Colleen :)