Deer devouring flowers. Off the shelf solution. Motion activated sprayers attached to hose. Worked great, but.

1. Looked like crap. Scifi minitowers in my yard. Hoses stretched here and there. 2. Randomly activating at night. Not loud but quite audible, and disturbing. 3. Occasionally zapped people, skunks, cats.

So I sold them to a friend (they aren't cheap)