The nutrition quality and health of larval instars exert influence on quality of the silk yield in sericulture The acetone solutions of oil from GrapeSeeds 10 ml oil from GrapeSeeds dissolved in 90 ml acetone and ten microliters of acetone solutions of 100 ppm linalool one part of a substance per one million parts of a solution mg per liter were utilized in this attempt through the topical applications to the fifth stages of larvae of silk spinning worm Bombyx mori L Race Double Hybrid The larvae fed with leaves of mulberry treated with water solution of Drakshasav group of larvae topically applied with acetone solutions of oil from Grape Seeds 10 ppm followed by feeding leaves of mulberry treated with aqueous solution of Drakshasav were also maintained Fifth Instar Larval Life Duration Hours and TissueSomaticIndex TSI of silkglands in fifth instar silk spinning worms of control group group from treated with oil from GrapeSeeds Linalool treated group group fed with leaves of mulberry treated with water solution of Drakshasav and group treated with oil of Grape Seeds treated topical followed feeding with leaves of mulberry treated with water solution of Drakshasav were recorded 14533 13786 31426 16873 13221 52625 17746 13786 52728 1628714572 52759 and 1685818789 53854 units respectively The CocoonShellRatio of control group GrapeSeed Oil treated group Linalool treated group group fed with leaves of mulberry treated with aqueous solution of Drakshasav and group treated with GrapeSeedOil treated acetone topical followed feeding with leaves of mulberry treated with water solution of Drakshasav were recorded 19422 23970 27989 28048 and 28378 units respectively Denier scale of silk filament spun by fifth instar silkworms of control group GrapeSeedOil treated group Linalool treated group group fed with leaves of mulberry treated with water solution of Drakshasav and group treated with GrapeSeedOil treated acetone topical followed feeding by leaves of mulberry treated with aqueous solution of Drakshasav were recorded 3243 4706 4793 4882 and 4948 units respectively The range of improvements of tissuesomaticindex TSI of silk glands ShellRatio of cocoon and Denierscale of silkfilament through treatment was 52625 to 53854 23970 to 28378 and 4706 to 4948 respectively Efficient use of source of juvenoids like linalool grape seed oil and drakshasav in desired solvent for treating the larvae serves to orchestrate the progress of metamorphosis