General Mills Inc. has decided it’s waited long enough for Congress to act on GMOs.

The food giant, which makes Cheerios and Lucky Charms cereal, will start citing genetically modified organisms on its products across the U.S. in coming weeks after a bid to create a national standard died in the Senate.

A law requiring GMO labels on some food products is set to go into effect July 1 in Vermont, and General Mills said it wasn’t plausible to create packaging for only one state. In January, Campbell Soup Co. became the first major food company to announce that it would start adding GMO labels to products with ingredients such as corn, soy, sugar and beets.

General Mills continues to support a federal standard and argues that the Vermont law is confusing to customers. But with the new legislation set to take effect in just over three months, the company said it had to act. Products with the new labels will start hitting shelves in the next few weeks.

“We can’t label our products for only one state without significantly driving up costs for our consumers,” Jeff Harmening, chief operating officer of U.S. retail at General Mills, said on the company’s website. “The result: Consumers all over the U.S. will soon begin seeing words legislated by the state of Vermont on the labels of many of their favorite General Mills products.”

Hot Issue

Labeling standards for GMOs have become a hotly contested issue, with states such as Maine and Connecticut joining Vermont in proposing their own mandatory labeling laws. The food companies say scientific consensus proves that GMOs are safe and that labeling is unnecessary. Groups opposed to GMOs on ethical and environmental grounds say consumers have a right to know if their food has been genetically engineered.

Last month, executives from General Mills said they were hopeful that a bill establishing a federal standard would pass in Congress. They echoed other large food producers in arguing that a patchwork of state laws would be cumbersome and expensive.

“The process of getting food into the grocery stores is not set up for a state-by-state method,” Mary Lynn Carver, a spokeswoman for the Minneapolis-based company, said Friday in an interview. “Different products comes from different places.”