You can keep dogs off your lawn by using a few simple tricks that wont hurt or poison dogs, but will do a good job keeping them away. You can get a number of dog repellents, water sprinklers or some more extreme solutions such as an electric wire fence around your lawn. Water Sprinklers. Even if dogs are not as afraid of water as cats, dogs dont like to be sprinkled with water. Get some water sprinklers that activate when detecting movement, this will send dogs away from your lawn. You ...