Sometimes, spotting requires a little more "oomph" than just spraying and washing.  Enter Spotting Brushes.

These are made by a venerable supplier to the professional dry cleaning trade, Newhouse, and are intending not for scrubbing fabrics like the grout in your shower, but rather to gently bounce up and down on stains to gently work stain removal liquids like pretreater into fibers.   Apply the fluids directly to the stain, and then tamp them through the fabric until the stain is completely saturated.

The brushes with boar bristles are suited for most woven fabrics - the "soft head" is intended for delicate wovens like chiffon and satin, as well as knits.  These are a complement to a bone folder spotter to work on a wider area.   

As the boar bristles are a natural protein fiber, rinse thoroughly after using enzymatic pretreaters that contain protease / subtilisin.  

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