The black disinfectant phenyl is formulated to kill 99.9% of germs effectively. It has a strong odor and can be used directly on stains for spot cleaning or diluted in water for cleaning hard surfaces in offices, homes, hospitals, schools, and more. For best results, dilute 50 ml of Gainda White Disinfectant Phenyle in 2.5 liters of water and apply using a swab or mop as needed. For tougher spots or stains, it can also be used directly.