Overview of silage additives available in the Czech Republic for 2025, compiled by the Research Institute of Animal Production. The document presents 152 products divided into three categories: biological (87), chemical (57), and combined (8). It contains detailed characteristics of product compositions, explains their effects and properties by type (homofermentative and heterofermentative bacteria in biological products, acids and their salts in chemical products). The text also includes an overview of innovations and market changes, including company acquisitions, new products, and discontinued products. It includes methodological explanations of bacterial classification according to new nomenclature and recommendations for optimal selection of additives based on crop type and silage conditions.