No, we cannot guarantee all stains will be 100% removable. Some of the stainings, depending on the nature, will permanently alter the carpet structure and may contain permanent dyes and colors which make it impossible to be fully removed. Carpet spot and stain removal success depends on the following elements: the age of the carpet, how long the stain is in the carpet, the type of carpet fibers, and previous treatments which could create the reverse effect by blocking stains into place. During our initial carpet inspection by our master technician, we will communicate with you the removal success rate on certain spots and stains. At Wiz Team, Inc. we use professional spotting kits developed over the past 30 years of experience in spot and stain removal with a high rate of success when it comes to stain removal. Even in the best and most experienced hands, spot, and stain removal cannot be guaranteed!