Insecticidal compositions intended to be dispersed at the surface of the water, and application of the compositions in the fight against the larvae of diptera live at the surface of the water

摘要

P the invention has for object of the insecticide compositions intended to be dispersed in the water surface, characterized in that they contain a given concentration of an insecticide, a solvent consisting of hydrocarbons containing at least 90% of aromatic hydrocarbons, with a boiling point of the volatility and density determined, and a mixture of surfactant - the active agent, anionic and nonionic of a given concentration and hydrophilic - lipophilic ratio is determined, the overall density of the composition is also within predetermined limits. / p & & p & the insecticide compositions of the invention may contain, in particular, the sulphide of 4,4 '- bis (o, o - dimethyl thiophosphoryloxy) diphenyl, and are used, e. g. in the fight against the larvae of similis. / p