If the no pooping signs don't work, try this, Beth @themefragrance
Practical Scarecrows, the Modern Version: The Scarecrow Sprinkler.
Scarecrow Sprinkler. Motion activated and works wonders if you're plagued by unwanted cats in the garden.
ScareCrow Sprinkler Motion Activated Animal Deterrent: to spray all the stray cats that pee in my bushes and terrorize my indoor kitties.
Contech Scarecrow Sprinkler Hoses Down Garden Trespassers......great for the deer,squirrels,gophers! :)
ScareCrow Sprinkler Motion Activated Animal Deterrent
Contech ScareCrow Outdoor Animal Deterrent 7.3" x 3.6" x 12.6"
Contech Electronics CRO101 Scarecrow Motion-Activated Sprinkler