We're sorry to hear that, Ann. Lutron products can be wiped clean with a damp cloth. When removing a wallplate, you can easily remove the screwless top plate with your hands by starting at a corner and pulling them apart to access to any dirt that may have found its way inside. If you still have questions, please reach out to our dedicated Customer Satisfaction team, at customersatisfaction@lutron.com, or call us at 1-844-LUTRON1. We're here 24/7, so please call us any time.
Brooks M. @ Lutron Support