This article discusses the best upsell strategy for pressure washing businesses. The upsell strategy is a technique used to increase sales by offering additional services or products. According to the article, the best upsell for pressure washing businesses is to offer customers the option to include a sealing service after pressure washing. This upsell not only adds value to the service but also helps protect and prolong the cleanliness of the surface. By offering this additional service, pressure washing businesses can effectively increase their revenue and customer satisfaction.