To eliminate fleas in outdoor areas, it is necessary to remove any debris that may provide shelter for the pests. Diatomaceous earth, nematodes and commercial insecticides can be used to remove adult fleas, while future infestations can be controlled with cedar mulch, nematodes and maintaining dry conditions. Removing fleas may require several weeks if the infestation is severe.
- Remove debris
Dead leaves, lawn clippings and other debris should be removed before treating the lawn. Mow tall grass, and eliminate any areas that trap moisture, such as damp mulch, that may house large populations of fleas.
- Treat the lawn
Diatomaceous earth, nematodes and commercial insecticides can be used to treat outdoor flea infestations. Apply the product only to areas of the lawn that are shady or damp and in areas that are frequently visited by pets, such as near the dog house. Nematodes and food-grade diatomaceous earth do not harm pets, but keep pets indoors after applying commercial insecticides to the lawn.
- Prevent future infestations
To remove flea eggs on the lawn, apply nematodes to the affected areas, and replace any mulch with cedar chips. If possible, allow the lawn to dry out and mow frequently until the infestation is under control.