
Synthetic carpets are made from nylon fibers with a polypropylene backing. Of the chemicals released from carpet, most notable are styrene and 4-phenylcyclohexane (4-PC responsible for the ‘new carpet’ smell).
Carpeting and rugs made from natural materials, like wool, typically don't contain flame-retardants or stain-resistant chemicals and will naturally repel insects.
Green Label carpets include Earth Weave's Bio-Floor, Woolshire, Helios and Bloomsburg.