The Simple Green 11001 Clean Building all-purpose concentrate cleaner is made with biodegradable ingredients and has a fragrance-free formula that cleans water-safe hard surfaces. It comes in a 1-gallon plastic bottle. The cleaner meets Green Seal GS-37 standards for cleaning products for industrial and institutional use. It has a green color, which helps show the level of dilution in a secondary container. The dilution ratio is 1:64.