On almost every job the professional carpet cleaner is likely to encounter some spots that call for special attention. There are a number of quality cleaning solutions that are made for particular types of stains and spots. All need the use of a spotting brush to help penetrate and allow the solution to work. (Some spots require a "tapping" action to help the chemicals reach deep into the carpet fibers while others may require a light brushing action). To cover the range of different types of stains and spots as well as personal brushing styles. Braun has developed three stiffnesses of brushes in two sizes. Pure bristle is medium still and retains the most solution. White nylon is the softest and black the stiffest. Both sizes of brushes have a chisel shaped handle for extremely tough spots.