A 500ml PU foam gun cleaner is a solvent-based aerosol cleaner formulated to dissolve and flush out uncured polyurethane (PU) foam from applicator guns, valves, and surrounding surfaces. Equipped with a dual-purpose fitting, it features a threaded collar that screws directly onto standard foam applicator guns for internal system flushing, as well as a clip-on spray nozzle attachment for manual spot cleaning of valves, tools, and work surfaces. Regular use prevents blockage within foam application equipment, extending tool lifespan and ensuring reliable delivery during site insulation, sealing, and fitting operations.