The invention relates to ULV plant protecting arthropodicidal formulation comprising alkyl aryl polyglycol ether as further additives in addition to the active ingredient(s) dissolved in the mixture of alphatic hydrocarbons and sunflower oil. The formulation according to the invention has an initial contact angle on the plant surface of > 13.degree., after 20 minutes of > 6.degree. and it is after 120 minutes still at least 2.degree..
