It's not supposed to, however, most brands are not certified or tested in any way. https://www.ewg.org/childrenshealth/monsanto-weedkiller-still-contaminates-f

It's not supposed to, however, most brands are not certified or tested in any way. https://www.ewg.org/childrenshealth/monsanto-weedkiller-still-contaminates-foods-marketed-to-children https://www.ewg.org/childrenshealth/monsanto-weedkiller-stil... Even reputable brands like Bob's Red Mill have had issues. After some of their products tested positive, they apparently took some measures: https://www.bobsredmill.com/blog/healthy-living/bobs-red-mill-oats-glyphosate/ https://www.bobsredmill.com/blog/healthy-living/bobs-red-mil...