NOVELTY - Preparing an agent with prolonged chilling effect against snails or molluscicide effect based on plant material, comprises: (a) chopping plant raw material; (b) fermenting at least one portion of the chopped and optionally moistened raw material; (c) homogenizing and/or thickening the total or at least partially fermented raw material to obtain a portionable mass; and (d) portioning the product obtained from the step (c) to obtain an agent with long-lasting chilling effect against the snails or molluscicide effect.    USE - The agent and the fertilizer are useful: for repelling snails; and as molluscicide (claimed), preferably the snail is land snails. Tests details are described but no results given.    ADVANTAGE - The non-chemical agent and the long-term, non-chemical fertilizer are: non-toxic; easy to use; and effective over a long period. The agent protects the plants and provides the necessary nutrients to the plants for their growth while repelling the snails. The fertilizer provides two effects i.e. acts as a slow fertilizer that is effective for long period of time and repels the snails.    DETAILED DESCRIPTION - Preparing an agent with prolonged chilling effect against snails or molluscicide effect based on plant material, comprises: (a) chopping plant raw material; (b) fermenting at least one portion of the chopped and optionally moistened raw material; (c) homogenizing and/or thickening the total or at least partially fermented raw material to obtain a portionable mass, where a plant material and/or plant extract from fruits of Sapindus mukorossi is/are added during the step of thickening and/or homogenizing; and (d) portioning the product obtained from the step (c) to obtain an agent with long-lasting chilling effect against the snails or molluscicide effect. INDEPENDENT CLAIMS are included for:    (1) a method-2 for preparing a long-term fertilizer with simultaneous chilling effect against snails or molluscicide effect comprising the steps (a), (b), homogenizing and/or thickening the total or at least partially fermented raw material to obtain a portionable mass, where in the progression of the thickening and/or homogenizing a plant material and/or plant extract from fruits of S. mukorossi and a fertilizer are added, and step (d); and    (2) the agent and the long-term fertilizer prepared by the methods.