Esteam Fire Wash 1 Gallon | Pack of 4Description Fire Wash is a concentrated wall wash with an ultra strength formulation for your most difficult cleaning needs. It removes heavy smoke residues, grease, and other difficult soils from painted surfaces, metal, concrete, tile, hard floors, and both sealed and unsealed wood. The diluted pH is 10. 8 and the dilution ratio is up to 1: 10. It is available in 4 L (1. 06 US gal), 20 L (5. 28 US gal), or 205 L (54. 1 US gal).