Earth Weave makes all-natural, non-toxic carpet, area rugs and padding using undyed, untreated wool, hemp, cotton, and jute. They were one of the first carpet manufacturer in the United States to introduce a product line incorporating 100% natural materials, including hemp/cotton backing and no-VOC rubber adhesives.
Earth Weave states that they are committed to 100% sustainable resource floor-coverings, and therefore will not manufacture a product from non-renewable petrochemical resources, including the "recycled pop bottle products" that have become popular. Instead, they focus on creating completely all natural, non-toxic carpets made without synthetic chemicals. (Other wool rugs can still contain a host of synthetic chemicals from dyes, stain protection, moth proofing, or from the backing or adhesive.) In contrast, Earth Weave's rugs are made of 100% undyed and untreated wool, and have a hemp/cotton backing with a no-VOC rubber adhesive. All of the rugs are also made in the USA.
The illustration above shows their construction methods:
Earth Weave starts by using only pure wool. We apply no dyes, pesticides, or stain protections that are commonly used by the other carpet manufacturers. The application of these chemicals would greatly affect indoor air quality through the off gassing of volatile organic compounds. The primary backing that we use is also an industry first combination of hemp and cotton. Earth Weave is the only carpet company to incorporate an all natural primary backing that is specifically designed for use in our biodegradable flooring.
We chose to use the hardy hemp fiber, due to its durability, strength, and mold and mildew resistance. The wool yarns are locked into place with a natural adhesive that is derived from the rubber tree. This adhesive is completely biodegradable and nontoxic as well. For the back of the carpet we use a jute secondary. Jute was commonly used in the carpet industry before the introduction of the synthetic backings currently employed. We chose to use this type of backing to further our cause of making a completely natural and nontoxic carpet.
See more at Earth Weave.