To clean your shield, use mild soapy water solution and a microfiber cloth to loosen bugs and road debris, then dry it with a second clean microfiber towel. Never use harsh household or petroleum-based chemicals to clean your shield, especially on the inside, as they can destroy the shield's special coatings. If the retainer snap on your Gringo S shield becomes tight or sticky, apply one drop of general-purpose light household oil to the inside. Apply one drop of medium-strength blue Loc-Tite to the threads of both hinge screws every time you install a shield.