The Environmental Protection Agency (EPA) of the United States Government estimates that only 35% of the synthetic fertilizer that we apply to our lawns ever makes it to the grass. The other 65% runs off into our lakes, rivers, streams and oceans, or seeps into our wells and ground water, or volatizes into the air we breathe. Even worse, the EPA estimates that only 2% of weed killers, insecticides and fungicides used in chemical lawn care ever make it to the weeds, pests or diseases. This means that 98% of those poisons go somewhere else; into our bodies, our pets bodies, up into the air or into the ground water.