The present invention relates to pesticidal mixtures comprising a component A and a component B, wherein component A is a compound of formula (I) wherein A1, A2, R1, R2, R3, R4 and R5 are as defined in claim 1 and one of Y1 and Y2 is S, SO or SO2 and the other is CH2 and component B is an insecticide or nematicidal biological agent as defined in claim 1. The present invention also relates to methods of using said mixtures for the control of pests.