Using these Deltana cabinet knobs is easy. Just grab the knob with your hand and pull or push to open or close your cabinet. For cleaning, use a soft, damp cloth to wipe the knobs gently. Avoid using abrasive cleaners as they can damage the finish. If the knobs become loose over time, simply use a screwdriver to tighten the screws. Keep them away from harsh chemicals to maintain their beautiful appearance. With proper care, these knobs will last for a long time and continue to enhance your cabinets.