It's Working!
Since I installed my Blink cameras about a year ago, I wake up to clips of cats, going under my porch, almost every night. (there are feral huts nearby).  I got this spray about a week ago, missed 2 nights (it says to apply daily for the 1st week) and have not had a single cat clip the entire time. Crossing fingers it stays that way.
Rating: 5 stars