Chemical cleaners are products used to clean surfaces and remove dirt, grease, and other contaminants. The three crossword solutions for the term chemical cleaner are LYE (3 letters), SWAB (4 letters), and VAC (3 letters). LYE is a type of caustic alkaline substance that can be used to dissolve grease and oils. SWAB is a tool used to apply or remove liquid from a surface. VAC is short for vacuum, which is a device used to suck up dirt and debris.