Vacuuming floors, carpets, furniture, crevices and cracks once a week is an excellent means of controlling the flea population. Vacuuming is especially effective at picking adults and eggs. The vibration from vacuuming can result in the emergence of adult fleas from the pupal stage. The newly hatched fleas are vacuumed up prior to ever meeting you or your pet. However, vacuuming is not particularly effective in removing the flea larvae in carpeting. Larvae wrap themselves around the base of carpet fibers, and hang on.17
Vacuum more frequently if the flea population increases, every two or three days during peak season. After vacuuming, the bag must be dealt with immediately or the fleas will escape and reinfest the area. The bag can be thrown away, burned or placed in a sealed black plastic bag in the freezer or in the sun for several days. A water vacuum eliminates the need to deal with the vacuum cleaner bag.
If you have a high level flea infestation, having your carpets professionally steam-cleaned may be worth the investment. Steam-cleaning kills fleas in the adult and larval stages. However, the steam can trigger the hatching of the remaining flea eggs a few days later.
Raising temperatures within a structure can kill the fleas. Isothermics Inc., of Anaheim, California, sells a heating unit that raises the temperature in a structure to the point where it kills fleas and other insects (termites, cockroaches and ants) without damaging the house or its contents. This technology is available only to pest control operators.17
Another tip I have seen work is salt . Flea larvae dont like salt and often it will kill them. So a home steam cleaner and put a bit of salt into the water when you are soaping the carpet. But do rinse thouroughly or the salt tends to collect moisture. In the greyhound kennels where I worked we used to rotor tiller in rock salt into the gravel runs each spring . None of his greyhound kennel runs had flea issues. But not sure how that would work on a lawn...