There are special felt pads that are designed for use underneath furniture on wood flooring. These felt pads are available in a variety of shapes and sizes. Some types of pads are sticky and will stick to the legs of furniture, others will have to be secured to the flooring to ensure that the furniture remains on them and doesn’t move around. Never use a hammer directly on the felt pads, use something in between. Always following the installation directions to ensure a secure fit. Check the pads periodically to ensure that dirt, debris, and other small particles don’t become trapped between the pad and the flooring and thus cause scratches or damages to the wood flooring.