This will not kill living fleas, but it will shut down their ability to reproduce. This is useful considering fleas can have up to a trillion offspring in a lifespan.


Look for an outdoor insect growth regulator you can spray around your yard.
 This will kill fleas and other household pests that are found outdoors.
 Fleas love to hang out in grassy areas, so a well maintained lawn will not be terribly attractive to them.
Treat your outdoor space with an insect growth regulator.
Mix a concentrate of esfenvalerate with some water, and spray it on your yard.
Keep your grass short.
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