In October 2021, twenty-one OECD countries and partner economies participated in an online product safety sweep to identify the degree to which products were available for sale online despite (i) being banned or recalled, (ii) having inadequate labelling or (iii) not meeting voluntary or mandatory product safety standards. Results reveal that large volumes of unsafe products are readily traded across borders and a 79% average rate of non-compliance (or potential non-compliance) with product safety standards and laws. More needs to be done by online marketplaces and other retailers to identify and remove unsafe product listings and by consumer authorities to deter non-compliance.