The invention relates to a herbal larvicidal matrix and the process for preparation thereof. A herbal larvicidal matrix comprises a mixture by wt. of 5% to 8%, of an active crude extract from a plant Piper argyrophyllum, 30 to 34% of a water soluble binding agent and 60% to 65% of an insoluble cellulose fibrous floating agent may be coconut fiber. Water soluble binding agent is a naturally occurring mucilage material and is derived from a seed from a plant of Plantago ovata. A feeding stimulant by wt. in the ratio of 0.5% to 2% of the total mixture is added. The feeding stimulant is selected from at least one of the group comprising fish meal, Soya meal, and yeast. The process for preparation thereof is dried at a temperature 40° C to 45° C for 1 to 2 hours.[IN-DEL-2006-02641A]
