An investigation by La Unió Llauradora in Spain has revealed that 88% of South African citrus fruits sold in Spanish supermarkets fail to meet European Union quality standards due to excess pesticide residues. The most common pesticide found is methoxyfenozide, which is not authorized for citrus fruits in Spain. The investigation also highlighted a lack of consistency in pesticide use, with some supermarkets selling citrus fruits that would not pass the quality control in the UK. La Unió is calling for stricter enforcement of quality standards and has accused some importing companies and distribution chains of turning a blind eye to the issue. They have vowed to publish the names of the supermarkets and hypermarkets found to be selling faulty citrus fruits if they do not improve their practices.