A study involving 641 participants across 10 European countries found pesticides in every silicone wristband worn for one week. Researchers at Radboud University tested for 193 pesticides and detected 173 substances. The average participant was exposed to 20 different pesticides through non-dietary sources. Non-organic farmers had the highest exposure at a median of 36 pesticides. Organic farmers and people living near farms recorded lower numbers.

Consumers living far from agricultural areas had a median of 17 pesticides. The wristbands captured banned substances including breakdown products of DDT, which was prohibited decades ago, and insecticides dieldrin and propoxur. Paul Scheepers, the molecular epidemiologist who co-authored the study, said people cannot avoid exposure to pesticides in their direct environment.