It works.....I think.
We have a stray cat who started using our backyard as his/her bathroom, so I sprayed a hefty dose of this in and around the area.  We've had a bit of rain so I don't know if it has been washed away; we see the cat walking across the block wall every day, but haven't seen him/her using the planted area as a litter lox.
Rating: 4 stars