Individual food samples often have multiple residues on them. An apple grown in the U.S. typically contains four pesticides, and some have as many as 10 different residues. Peaches, winter squash, spinach, carrots and grapes are more likely than not to have two or more residues in a sample. One sample of spinach had residues of 14 different pesticides on it. Eleven of the 12 highest TI scores are for U.S.-grown foods.
Some differences exist between importing countries, as well as between the U.S. and other countries.
Cases where imports are worse include Chilean grapes, Canadian and Mexican carrots, Mexican broccoli and tomatoes, Argentine and Hungarian apple juice, and Brazilian orange juice. U.S. samples are worse than imports for fresh peaches, fresh and frozen winter squash, fresh green beans, apples, and pears. U.S. apple juice has a higher TI than apple juice from Germany or Mexico, and U.S. grapes have higher TI's than those from South Africa and Mexico. The size of the differences varies from food to food. In two cases with the highest TI's of any foods, U.S. peaches have 10 times the TI of Chilean imports, and U.S. frozen winter squash has a TI 143 times as high as Mexican winter squash has.