Lemon wash: Citrus is a natural flea deterrent and will condition your pet's skin. Make this wash by combining 4 sliced lemons, 1 tablespoons of salt, and 6 cups of water in a pot. Bring to a boil for two minutes, then turn off and let steep 24 hours. Wash your pet with soap, comb out to remove dead bugs, and then apply the lemon water generously over your pet. Repeat the lemon wash portion of this daily until your pet's skin improves. Can also be used as a spray and applied daily. This is just one homemade remedy. If you go to this web site, there are more listed. http://www.ecolife.com/green-home/natural-pet/homemade-flea-killer-treatment.html
vickibankhead is right. Also, if you use cedar chips as bedding, cedar is a natural flea deterrent. There are cedar-filled mattresses available through pet stores, or you could always make your own with a bag of cedar shavings and some fabric.
take a night lamp put on floor turned on get a small dish put water in it place it very close to the lamp fleas will go to the heat from the light jumping in to the water drowning them selves fleas can't swim try it you will be surprised