Pesticidal compositions suitable for spreading from aircraft

Liquid pesticide composition suitable for being spread from aircraft containing a solution of N-monomethylamide of the O,O-dimethyldithiophosphoryl acetic acid in a mixture of a phenolic material selected from the group consisting of phenol, cresols, xylenols and mixtures thereof, and a mixture of aromatic and aliphatic hydrocarbons having a distillation starting point at atmospheric pressure above 150.degree. C, a flammability point above 45.degree. C, an aliphatic hydrocarbon content of from 0 to 35% and an aromatic hydrocarbon content of 65 to 100%, said solution being composed of at least 2% N-monomethylamide of the O,O dimethyldithiophosphoryl acetic acid, 0.5-50% of said phenolic material, and the remainder said mixture of aromatic and aliphatic hydrocarbons, said composition being stable at 0.degree. C.