I have been researching how to be rid of fleas naturally (for my cat) and have found out that Diatomaceous Earth, which is made of fossilized diatomes, is supposed to decimate fleas, as well as having many other uses. Some of those are: Lowering Cholesterol, Lowering Blood Pressure, Growing Hair and Nails, Stopping Pain in Joints, Clearing Acne, Restoring Elasticity to Skin, and many others. Since I had to order 2.5 pounds (it was the smallest amount offered) at http://www.earthworkshealth.com/ I figure that I’ll try it out for a month and see how it works.