초록

A method of controlling mosquitos by adsorbing onto the surface of a body of water suitable for breeding mosquitos a monomolcular or duplex film of an organic material which reduces the surface tension of the body of water to 30 dynes/cm or less.

대표청구항 ▼

A method for eradicating mosquitos by applying to a body of water containing immature forms of mosquitos, in an amount sufficient to provide and maintain an approximately monomolecular film of a nonionic, autophobic, organic material with a density less than that of water, a boiling point of 170°C.

A method for eradicating mosquitos by applying to a body of water containing immature forms of mosquitos, in an amount sufficient to provide and maintain an approximately monomolecular film of a nonionic, autophobic, organic material with a density less than that of water, a boiling point of 170°C. or higher, a freezing point of less than 5°C., an HLB number of 10 or less, a bulk viscosity of less than 1000 centistokes at the temperature of use, a spreading velocity of 10 cm/sec for the first 100 cm, and a surface tension effectiveness which lowers the surface tension of said body of water to 30 dynes/cm or less. The method of claim 1 wherein said material is selected from the class consisting of sorbitan monooleate; a solution of 70 volume percent to less than 100 volume percent of sorbitan monooleate and 2-ethyl butanol; saturated, branched-chain alcohols with a carbon total from 15 to 19 carbon atoms, and one to three oxyethylene groups; unsaturated cis-alcohols with a 15 to 19 carbon atom chain length; unsaturated ethers with a chain length of 12 to 18 carbon atoms and three to five oxyethylene groups; and oleyl ether with two oxyethylene groups and mixtures thereof.