Change in design: The trundle is without sides with only the front panel.
Using a clean, washable cloth made of soft, lint-free cotton, such as an old T-shirt. (The cloth should have no buttons, zippers, or anything that could scratch furniture surfaces.) The Fabric should be moistened with water or a cleaning agent, but just enough to make dust adhere to it; if you see any trace of liquid on the wood after you wipe, your cloth is too damp. Alternatively, you can use another cloth to remove the excess moisture.