We all have to deal with getting unwanted pests out of the garden. Cats, dogs, deer, rabbits, large birds, and many others can cause problems, but we want a humane animal repellent. This review takes a look at the Contech Scarecrow Motion-Activated Sprinkler, one of the smartest scarecrows repellents you’ll see. When it detects an intruder it instantly releases full garden hose water pressure on the intruder. The effect is both startling and immediate. Animals quickly get out of the area and avoid it in the future.