Using the Brizo Kintsu Two - Handle Wall Mount Tub Filler Knob Handle Kit is easy. Just turn the knob handles to adjust the water flow and temperature. It's as simple as that! When using, make sure to turn the handles gently to avoid any damage. As for maintenance, wipe the handles regularly with a soft, damp cloth to keep them clean and shiny. Avoid using abrasive cleaners as they can scratch the premium brass surface. If you notice any water leaks or issues with the handles, contact Brizo's customer service right away. With proper use and care, these handles will serve you well for a long time and keep your bathroom looking great.