TFC Purge (Prices from)TFC Purge is a specially formulated liquid paste designed to purge dirt and spots from polished porcelain floors. Purge has the ability to release stubborn dirt such as rubber mallet marks, pencil marks and scuff marks from the minute capillaries in polished porcelain. Purge must be used to spot clean before the general clean that is necessary as preparation for sealing. Purge may also be used to remove tough wax coatings that are applied to some