Insecticidal compositions which exhibit a synergistic effect

Abstract From the Canadian patent

Insecticidal compositions are described which contain a combination of at least two of the four following active materials (a), (b), (c) and (d):, (a) 0,)-dimethyl 0-(2-methoxycarbonyl-prop-l-enyl) thiophosphate, (b) 0,0-dimethyl S-(4-aza-6-chloro-2-oxo-benzoxazol-3-yl)methyl thioposphate, (c) 0,0-dimethyl-0-(3-methyl-4-nitrophenyl) thiophosphate and (d) an ortho-substituted phenyl N-methylcarbamate and may also contain adjuvants. These compositions show pronounced synergistic insecticidal activity against various insect families.