Acetone, a seven-letter solution to the crossword term 'Bacteria Remover, ' is a colorless, volatile liquid commonly used as a solvent in nail polish remover and paint thinner. RAZOR, a five-letter solution, is a sharp-edged tool used for shaving, trimming, and cutting. ERASER, a six-letter solution, is a rubber or plastic device used to erase pencil marks from paper. All three solutions are effective tools for removing bacteria from surfaces.