Many do, but it may not be their intention. "Washind Soda" is what you're left with after the "per" is gone from sodium percarbonate (about 2-3 hours once in solution). Cleans okay (alkaline cleaner) but has no "active" component to help scrub things. If your CIP washer is powerful enough to blast loosened muck off, I guess it'll do the job. But Percarbonate is cheap too (in generic sacks).