Salt-Away-Sprayable-Everbuild-SALT5-Salt-Away-removes-salt-&-unsightly-white-efflorescence-from-bricks-stone-&-concrete-It-is-a-biodegradable-safe-formula-works-on-walls-paths-&-patios-&-can-be-poured-sprayed-or-brushed-on-Effloresence-is-commonly-caused-when-soluble-salts-within-building-materials-or-dissolved-salts-are-transferred-into-building-materials-by-water-At-the-surface-of-the-building-material-the-water-containing-these-dissolved-salts-evaporates-leaving-behind-unsi