on september 16, 2009, kao corporation, maker of econa cooking oil has voluntarily suspended sales of products containing dag oil in japan, which include cooking oil, mayonnaise, salad dressing, and pet food products. the company is cited as considering suspending the sales of enova brand oil sold in north america. on the same day, hagoromo foods, maker of sea chicken brand of canned tuna, and satonoyuki, maker of tofu products, have voluntarily suspended number of products made with econa cooking oil sold in japan.