Citrus has the ability to maintain the appearance of your carpet and minimize allergens. When combined with an antimicrobial, it provides relief from allergy symptoms. Mildew problems can be reduced and reactions to dust mite residue lessened.  Citrus is very effective against grease and soil, and fights yellowing and oxidation that can dull your carpet. It cleans and treats carpet fiber with no sticky soap residue. The cleaner is powered by d-Limonene, a solvent steamed out of citrus rinds.  The solvent is biodegradable, adds no materials into the environment and contains no ozone depleting chemicals.