 Your dryer sheets are ruining your dryer. Over time, the wax they produce that makes your clothes soft can coat the sensors in your dryer, which impacts temperatures and the overall efficiency. That wax can also build up on your lint screen making dry times way longer. Dryer sheets can also be a major fire hazard if they get stuck in your vent traps. Instead, try tennis balls or wool dryer balls. They help get rid of static without any of the chemicals and fragrances that can irritate your skin.