GW ALL SURFACE CLEANER works on practically any surface! This low-phosphate, low-alkaline concentrated cleaner degreases and cleans a variety of interior and exterior surfaces, and it’s so gentle you can use GW ALL SURFACE CLEANER on leather and upholstery. GW ALL SURFACE CLEANER gives the user endless possibilities when it comes to all-surface cleaning. Stains, grime, and dirt don’t stand a chance.