Do not submerge your paddle in water to clean it. While we do seal them with polyurethane, it's still made of wood and an imperfection in the finish can lead to water seeping in when submerged. You can wipe it down with a damp cloth. If body fluids or other substances get on your paddle, use soap and water or a sex toy cleaner, and remove cleaner residue with a damp cloth, then dry it off completely with a towel or cloth.