AFTER USING: It is best to turn the green regulator to let it blow and last for 30s-60s to prevent blockage. 【VERSATILE WASH GUN】 High pressure car cleaning gun has two different cleaning modes, a professional cleaning tool for car interior or exterior cleaning including door jams, wool/leather car upholstery, cup holders, dashboard, consoles, shifters, steering wheel door panels, carpet, floor mats, seat belt retractors, wheel tire surface etc.what's more?.