Until you find a yard solution try to walk her on sidewalks only and in areas where other animals do not go.
Most flea treatments sold in stores do not work. Go to your vet and get what they prescribe or go online to a place like 1800petmeds.com to purchase Advantage II or whatever brand your vet uses. They sell for a little less online that at most vet's offices. Just make sure you buy from a reputable seller.
The vacuum is your best defense inside. Vacuum under the cushion and along the edges of your rooms as well as the rest of the place. Empty it out and take it outside to the garbage right away. Place moth balls in the vacuum bag to kill any eggs left inside.
Many vets office's sell a spray called Siphotrol that is one of the best sprays for fleas inside. It is also available on Amazon and some other online sites |