Natural Material and Safe if Ingested. So you can Forget the Worry of Scrub Bits Getting into Your Food.Works Better than Any Synthetic Scrub.o Not Leave Scratch Marks on Coated Utensils. Safe to use on Teflon.Cleans Better than Anything Plastic.Natural Material and Safe if Ingested. So you can Forget the Worry of Scrub Bits Getting into Your Food.