Disclosed is a pesticidal composition comprising: (a) a pyridine-sulfanyl-amide derivative of formula (I), wherein the substituents are as defined in the specification,b) an ammonium salt selected from the group consisting of ammonium sulphate, ammonium nitrate, ammonium carbonate, and ammonium phosphates or combinations thereof,(c) a nonionic surfactant selected from the group consisting of alkyl phenol ethoxylates, fatty alcohol ethoxylates, polyoxyethylene ester of fatty acids, methyl ester ethoxylates, polyalkylene oxide block copolymers, amine oxides, esters of polyhydric alcohols and fatty acids, glycol esters, anhydrohexitol esters, and alkyl poly glycosides, or combinations thereof,wherein the compound of formula (I) is present at a concentration of about 0.01 ppm to about 10000 ppm the ammonium salt is present at a concentration of about 1000 ppm to about 44000 ppm and the non-ionic surfactant is present at a concentration of about 100 ppm to about 10000 ppm.wherein said pesticidal composition is suitable for controlling pests selected from Coleoptera, Dermaptera, Dictyoptera, Diptera, Hemiptera, Homoptera, Hymenoptera, Isoptera, Lepidoptera, Mallophaga, Orthoptera, Phthiraptera, Siphonaptera, Thysanoptera, Thysanura, Acarina, Nematoda, and Symphyla.
