Richard 95006 White tampico fiber brush (7'').

charge it heavily — a wash brush is meant to be soaked; dip deep and let the wide fiber block take on solution, because carrying volume is the point of the 7" face. Two-hand work: the big brush rewards a two-hand grip on broad surfaces — steadier pressure edge-to-edge and less fatigue over an elevation. Scrubbing: moderate, overlapping strokes that agitate the chemistry into the pores and joints; the fiber is soft, so let the solution and dwell time work rather than trying to abrade. Cleaner safety: acidic and caustic cleaners need gloves, eye protection, usually pre-wetting the masonry, and strict adherence to the maker's dwell and rinse steps. Brush care: flush all cleaner out with clean water immediately after use — natural fiber lasts far longer when chemistry isn't left to dry in it — and hang the brush to dry rather than resting it on the fiber, which takes a set. Rinsed and hung, it's a multi-season tool.