Ideal for removing mildew stains and chalk buildup on paint, STIHL deck and house wash is designed for use with STIHL pressure washers. This wash is hard water stable and safe for plants. It is made for all types of siding and is safe on ferrous and non-ferrous metal surfaces. It also contains special rust inhibitors to reduce corrosion and conditions surfaces prior to painting. | STIHL Deck & Housewash 1 Gallon