I realize I have been following the tenents of Green Living for much longer than most have heard of it, but hopefully this will help you understand more about why you need to do this too.
Fate Of Personal Care Products Linked To Environmental Pollution And Human Health Concerns
ScienceDaily (2008-05-19) -- People's concern in maintaining germ-free homes has led to the widespread use of anti-bacterial soaps and cleaning agents. But the active ingredients of those products have come under scrutiny due to environmental and human health concerns. Now, researchers have shown that antimicrobial ingredients used a half a century ago persist today in estuarine sediments into which New York City and Baltimore have discharged their treated domestic wastewater. ... > read full article