Fleas are tiny black insects that feed off of the blood of animals. Most homes that are infested with fleas are because the homeowners have a dog or a cat. You can still have an infestation outside, however, even if you do not own an animal. According to the University of West Virginia, skunks, opossums, and rodents can all carry fleas into your yard. It is important that you use the proper insecticide to get rid of these pests, or they will continue to multiply in your lawn.
Clear your lawn of toys, grills, and patio furniture. You don't want to get insecticide on any items you are going to use later on. This will also give you a clear shot at getting the fleas in the lawn.
Turn on your garden hose and lightly spray your lawn. Texas A&M University states that this causes the fleas to climb up grass blades where they are easier controlled by the chemical insecticide. This is the best way to kill the fleas.
Use an insecticide with the ingredient diazinon. Diazinon is an active ingredient that has the power to kill fleas. Make sure you read the product label carefully, and follow all safety precautions before using the product.
Mix the diazinon with water if the product label directs you to. You can do this in a garden sprayer. Then spray the lawn with the insecticide. Start at the back of your property, and work your way forward. Go from side to side so that you do not miss any spots.
Wait for the product to dry before allowing your children or pets to go back outside and play.