I do not. I get all of my buckets from the local bakery for free. They use them for frosting (Brill?) and they are commercially food grade. I was curious when I was first getting them and looked for the differences (cavity mold, date stamp etc) between the bucket they sell at HD and the buckets I get from the bakery. Short of one being orange I found no differences but I didn't look at the chemically. Personally unless you find something definitive that indicates these are food grade I wouldn't use them.