As mentioned on the linking page, magnesium levels should not exceed .10% (.001). Listed below are some adult dry cat foods that meet AAFCO standards.... (Association of American Feed Control Officials) Waltham 0% K/D 0% C/D .07% W/D .08% Kirkland .08% Science Diet , Orig. - .08% Purina One .08% Purina Special Care .08% Friskies Special Diet .085% Nutro Max .085% Prescrip. Health Blend .09% IAMS Orig. .095% Golden Blend .10% Feline Principle .10% Select Balance .10% Purina Mature .10% AVOID FOODS THAT DON'T LIST MAGNESIUM LEVELS 9 Lives Atta Cat Deli Cat Kit 'N Kaboodle Meow Mix Nu Pet Whiskas (All) Alley Cat Chefs Blend Friskies - Senior. Ocean Fish, Poultry Platter,Dental Diet, and Gourmet Purina Cat Chow