The major metabolite of fenpyroximate is M-3 with a maximum amount of 10.8 % analysed in one of the two soils after 14 days. Furthermore, M-11 was identified as a minor metabolite with maximum concentrations of 8.8 %. M-11 was observed at concentrations > 5 % in sandy soil Ehime at the subsequent sampling days at study end (day 84 and day 112) and from day 7 until day 56 in loamy sand Kanagawa. The metabolite M-8 never exceeded 5 % of the applied radioactivity.Mineralisation of the [benzyl-14C]-fenpyroximate was found to be extensive with > 50 % CO2 after 100 days, however, the [pyrozole-14C]-labelled moiety showed limited mineralisation with around 17 % CO2 after 112 days. The formation of bound residues increased to a high plateau with maximum levels of 46.0 % TAR in Ehime soil and 58.3 % TAR in Kanagawa soil at study end after 112 days. Based on the high amount of bound residues (of unknown composition) and the limited mineralisation rate of the [pyrazole-14C]-labelled fenpyroximate, the active substance can be classified as highly persistent according to the classification scheme of Beek et al. (2001).