We sampled and tested over 500 of the nation’s most popular infant formulas and baby foods. Products were purchase directly from regional and national grocers and online- the products tested are the exact same products in pantries and refrigerators across America. The products were tested for heavy metals (arsenic, cadmium, lead, and mercury), by-product contaminants (Pesticides, Antibiotics, Melamine, BPA/BPS), and process contaminants (Mycotoxins, Acrylamide).