Optimum's Carpet & Fabric Cleaner / Protectant is used to clean and protect carpet and upholstery fibers all in one step. This cleaner can be diluted up to 3:1 for most applications. It should be used at full strength to remove tough stains and heavily soiled fibers. Simply spray OPT Carpet & Fabric Cleaner into the area desired to be cleaned and agitate with a brush then wipe off any excess. The cleaner leaves behind a protecting polymer that fights away dust and dirt giving your interior the fighting edge on staying clean.