Kleen Krete Biodegradable Multipurpose Simply Apply Concrete Remover 32 oz. (Pack of 6)Kleen Krete introduces this biodegradable mortar, stucco, grout, and concrete remover, which can be used on nearly any surface without causing damage. Kleen Krete biodegradable liquid dissolves, releases, and removes hardened concrete from formwork, machinery, and other tools. You will never need to air hammer, sandblast or scrape your equipment clean again when you use this concrete and mortar dissolver. This concrete dissolver also works as a brick