EARTHWORM Carpet & Upholstery Cleaner penetrates upholstery fabric and carpet fibers to loosen and break down embedded dirt, food stains, pet waste and most other organic materials. Environmentally responsible. The result is a truly clean area. Earthworm is approved by the Carpet & Rug Institute. Natural bio-enzymatic process Fragrance-free No harsh chemical residues EARTHWORM products use a naturally- occurring process to break down organic materials. All living things contain enzymes. Our bodies use about 75, 000 of them to help perform tasks like breathing and digesting. We have harnessed these enzymes to break down food, grease and almost any other organic material. Enzymes act as a biological catalyst to increase the rate organic material is broken down. Instead of scrubbing, the natural bio-enzymatic process does most of the work, which is why we say, "let the worm do the work. " And when the task is completed, no harsh chemical residues are left behind.