I just heard on the radio, our local cleaning expert.
To remove cats ssip use white vinegar. But aparently cats can spray for 12 ft, so it can be every where. Ultra violet light will hi-light it, so you can clean it all up.
To keep the cats from ssipping in you garage, they do not like camphor, it seems to iritate their mucous membranes. So spread some naptha flakes or moth balls around the shed and the cats should stay away.
