Unsmoke's Wall Wash with Biosolv is formulated with proprietary brightening and deodorizing agents for cleaning smoke-damaged hard surfaces. Especially effective for prepping walls for painting - it quickly removes both oily and dry soot, and does not require rinsing when used as directed. Especially effective for cleaning up after grease fires. A true multi-use product, Wall Wash can also be used as a degreaser for parts washing and can be added to any cleaning agent to boost odor control.