The best seal starts with a clean surface, and each hardscape surface has distinctly different qualities to remember when cleaning and then sealing. PW Paver Wash stands out as the best general-purpose paver wash for concrete and clay pavers, retaining wall blocks, brick, and masonry as a must-use product to prepare pavers for sealing. PW is easily applied to remove ground-in dirt, efflorescence, polyphase, and more while opening surface pores for optimal sealer bonding.