The 1,4SIT preparation is intended for use in potato storage to prevent sprouting. The preparation contains the active ingredient 1,4-dimethylnaphthalene and is used at a concentration of 20 ml per ton of potatoes. The manufacturer of the preparation is DormFresh Limited from the United Kingdom. The preparation is applied in storage facilities during the storage of sweet potatoes, allowing effective control of sprouting and long-term preservation of product quality. The form of the preparation is a concentrate suspension, ensuring ease of use and even distribution of the active ingredient. The 1,4SIT preparation is a plant growth regulator widely used in agriculture to address issues related to potato storage. Its use allows increased storage efficiency and minimizes crop losses due to improper storage.