18 products tested

Oat cereal Glyphosate Contamination Rankings

Oat-based cereals consistently rank among the highest glyphosate-contaminated foods tested. Because oats are commonly sprayed with glyphosate as a pre-harvest desiccant to speed drying, residue concentrates in finished products like rings, squares, and crisps. Multiple EWG studies found contamination in virtually every oat cereal tested — with some brands exceeding the child-safe benchmark by more than 15×.