| http://www.w3.org/ns/prov#value | - The salts can be brushed away with a stiff brush/broom or hosed, but will reocurr as the moisture then draws more salts up.There are a number of products on the market for removal of efflorescence, BUT they are almost all acids (phosphoric or other acids) which disolve the salts, but are usually not very successful as the efflorescence reoccurs.This product is expensive, but is a far more effectiv
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