We recently reported that samples of Maseca white and yellow corn flour tested positive for glyphosate, the active ingredient in Monsanto’s Roundup weedkiller.

Some Maseca flour samples also tested as high as 94.15 percent for the presence of genetically modified organisms (GMOs). That’s a startling finding, given that GMO crops are not allowed to be grown commercially in Mexico.

Those findings can mean only one thing—Mexico-based Gruma, which owns the Maseca brand, is importing GMO corn from the U.S. to produce its flour, sold all over the world, including in Mexico and the U.S.

On the Gruma website, the company claims that the Maseca brand is positioned as a “synonym for quality” and that it is made from “100% natural corn,” and that Maseca brand tortillas are “a natural, healthy and nutritious food.”

If you don’t think glyphosate-contaminated GMO corn is “natural, healthy and nutritious,” please sign this petition.

TAKE ACTION! Tell Maseca: Consumers Don’t Want Pesticide-Contaminated GMO Flour!