Pesticidal benzodioxole

Compounds of the general formula: (I) wherein R1 and R2 each independently represents a halogen atom or an alkyl, alkoxy, haloalkyl, haloalkoxy, alkoxycarbonyl, alkenoxy, cyano or nitro group; R3 and R4 each independently represents a hydrogen atom or an alkyl group; R5 represents a hydrogen atom, or an alkyl, alkoxy or alkoxycarbonylalkyl group; X and Y each independently represents an oxygen or sulphur atom or a group N-R, in which R is a hydrogen atom or an alkyl group; n is 0-3; r is 0 or 1; m is 0-4; and A or B represents a group of the general formula: (II) wherein R6 represents a hydrogen or halogen atom, or an alkyl group; and R7 represents a halogen atom or an alkyl group; the other of A and B being a hydrogen atom or as for R1 or R2, have useful pesticidal activity. Compounds of the general formula: (I) wherein R1 and R2 each independently represents a halogen atom or an alkyl, alkoxy, haloalkyl, haloalkoxy, alkoxycarbonyl, alkenoxy, cyano or nitro group; R3 and R4 each independently represents a hydrogen atom or an alkyl group; R5 represents a hydrogen atom, or an alkyl, alkoxy or alkoxycarbonylalkyl group; X and Y each independently represents an oxygen or sulphur atom or a group N-R, in which R is a hydrogen atom or an alkyl group; n is 0-3; r is 0 or 1; m is 0-4; and A or B represents a group of the general formula: (II) wherein R6 represents a hydrogen or halogen atom, or an alkyl group; and R7 represents a halogen atom or an alkyl group; the other of A and B being a hydrogen atom or as for R1 or R2, have useful pesticidal activity.