A very popular product! Powerful water soluble cleaner and degreaser. Excellent for heavy-duty spot and stain removal of grease of oil-based spots--which most stains are. In its more concentrated form, ULTRA has been used to strip paint. But, in the concentration we sell, it's safe on all surfaces (when used according to directions) -- yet will effectively clean many of the toughest spots and stains. 32 ounces (1 quart).