Carpet refresher is a cleaning product designed to eliminate odors and revitalize the appearance of carpets and rugs. Typically available in powder or spray form, these products often contain ingredients that absorb moisture and odors, leaving carpets smelling fresh and looking clean. To use, simply sprinkle the powder over the carpet, let it sit for a specified amount of time, and then vacuum it up, or spray it directly onto the fabric and allow it to dry. Always check the instructions for specific applications and testing on an inconspicuous area first.