The use of a compound of formula I, wherein Y is a single bond, C═O, C═S or S(O)m where m is 0, 1 or 2 R′, R2, R3, R4, R8 and Ra are specified organic groups and p is 0, 1, 2, 3, 4, 5 or 6 q is 0, 1, 2, 3, 4, 5 or 6 provided that when p is 2 then q is not 2 p+q is 1, 2, 3, 4, 5 or 6 or salts or N-oxides thereof or compositions containing them and their using in controlling insects, acarines, nematodes or molluscs. Novel compounds are also provided.
