Insecticidal composition having improved effect

The present invention is fatty acid biosynthesis inhibitors (e.g., phenyl-substituted cyclic ketoenols) regarding plant protection agents comprising. An object of the present invention, by the addition of adding the ammonium salt and / or phosphonium salts, or ammonium salts or phosphonium salts and penetration enhancers, is to increase the effect of plant protection agents. The present invention also corresponding products, also relates to the use of these products in the methods and plant protection agents producing these products.