Containers of Water

• Putting half-filled glass jars or clear bottles of water across your lawn can deter dogs from using your grass or lawn as their bathroom. Similarly, you can place a dog dish full of water on your lawn's grass, too, which should have the same effect. The reasoning behind this approach is that dogs will not defecate if they realize that there is a source of drinking water close by. A good number of people swear by this method, according to Scholarship Hunter.
  
  

Sprinklers

• Another thing that you can put on your grass to keep dogs off of it are automatic sprinklers. You have the option of setting up your automatic sprinklers in such a way that they go off every time that dogs would think of going on your grass. For instance, dog owners have a tendency of walking their pets at fixed times during the day or night. If so, set your sprinklers to water your grass an hour or so before the dog owners walk their dogs. Most dogs dislike defecating on wet grass, according to Scholarship Hunter.
  
  

Ultrasonic Animal Deterrent

• An ultrasonic animal deterrent can make an effective way of keeping unwanted dogs off your yard. An ultrasonic animal deterrent is a motion-activated device that makes for easy installation on a fence. It also is a maintenance-free, humane and effective way of keeping dogs off of your property without the need to use chemical solutions, according to Scholarship Hunter. Lab testing of an independent nature has established that this kind of high-frequency sound technology has been a successful form of pest control.
  
  

Signs

• Signs are a basic approach to keeping dogs off your lawn's grass. Signs you can put up include the "Keep Dogs Off Lawn" or the "Please Clean Up After Your Dog" signs. You can purchase these signs in a multitude of colors and sizes. Signs like these have the tendency of being hard for dog owners to ignore because it makes them realize that you are a person who is serious and upset about dogs defecating on your lawn. Options are putting a sign on the grass or just hanging a sign on the fence.