Residues of more than one pesticide were found in % of samples for the 2014 report. The presence of multiple residues does not constitute non-compliance with MRL legislation as long as individual pesticides do not exceed legal limits. However, products with multiple residues should be assessed carefully by the national authorities (for example, are combinations of pesticides being used deliberately to circumvent MRL limits on single substances?). EFSA did not consider cumulative risk assessment in its latest report because it is currently finalising a tool for assessing cumulative exposure to multiple pesticides . The tool is being piloted to investigate the cumulative effects of pesticides on the nervous system and the thyroid. The results will be published in 2017.