FeetPeople Suede and Nubuck Cleaning Block helps remove stains and marks from suede & nubuck leather products. This cleaning block will even work on hard to remove spots. DIRECTIONS: For most spots, rub the cleaning block gently over the area to be cleansed. For hard to clean spots rub the area harder. After the cleaning, brush gently with the cleaning block to raise the nap back to normal. For best results, use a FeetPeople Brush to remove the residue and return the cleaned material to its original appearance.