Dole products are no longer OK certified and do not bear the OK symbol (except for limited special productions). This affects Aldi, Walmart, and other stores that carry Dole products, such as garden salad and shredded lettuce.
The AKC certifies a variety of cabbage slaws sold in Kroger. Publix also carries Coleslaw from Fresh Express with a Star K. Be sure to check packaging for a reliable certification.