Devour succeeds when other methods fail because it actually digests these complex insoluble stains and changes them into a water-soluble form that can be rinsed out. Because Devour is a liquid, it is applied directly to stains and goes right to work, even on old protein stains. It is more convenient and faster to use than powdered enzyme digesters. With proper use, even stains that seem impossible to remove can be handled effectively.