Dissolve 2 tbsp. of oxy-cleaning powder in 1 gallon of hot water, stirring until all of the powder has dispersed. Spread a liberal amount of cleaner onto the floor, working in a 3-foot strip and saturating the entire surface. Let the cleaner soak for fifteen minutes. This will loosen all soil and old finishes from the tile. Scrub the floor vigorously, using the abrasive edge of the mop in a back and forth motion. All dirt, polish and sealer will be stripped from the surface of the floor. Rinse the stripped VCT tile area, using clear water and the mop and replacing the water as it becomes soiled. Repeat the stripping and rinsing process until the entire floor has been cleaned and rinsed. Allow the floor to air dry. Apply two coats of VCT sealer according to the manufacturer's directions, allowing the floor to dry in between coats.