There wasn’t much so far that could be done to prevent flea infestation. Now, there are various chemicals that reproduce a hormone that the fleas produce and prevent them from developing. They have many benefits like being nontoxic to pets and humans, preventing the flea egg from hatching, and inhibiting the development of larvae. It is possible to prevent flea breeding by using an insect growth manager during spring season. These are readily available as aerosol sprays. Search for products containing fenoxycarb, hydroprene or methoprene. A tactic to prevent fleas can be proper a screening of sneak spaces.