The cat actually licked it up!
Well, I used the product for several weeks, to no avail. One evening the cat came on my balcony, right after I sprayed a liberal amount, and started licking it up! I actually thought it was amusing. I guess cats are like people and what works for one doesn't necessarily work for another. I'm not sorry I gave it a try, seems like a good product in general. And,  I decided to start mopping the deck and spraying the rails with white vinegar. Been doing that for several days.  Haven't seen the cat yet.  Hope this helps someone else.
Rating: 3 stars