The Sonido 400FS preparation is a nanosuspension concentrate intended for seed treatment. The active ingredient is thiacloprid, with a concentration of 400 g/l. The preparation is used in agriculture and applied for processing corn seeds. Sonido 400FS is manufactured by Bayer AG, located in Germany. Using the preparation provides protection for seeds against potential pests and contributes to improved germination and growth of the crop. The preparation is applied via an emulsion for seed treatment, allowing for even distribution of the active ingredient on the seed surface.