Rice weevil, Sitophilus oryzae is the primary pest of cereal grains;both larval and adult stages internally damage the cereal grains like paddy, wheat, maize and sorghum. It causes excellent monetary loss up to 100% in maize, unhusked paddy 69% and 83.5% in sorghum both in quality and quantity. Damage results in lessening the grain weight, loss of nutritional elements and germination of seeds. Many food grains are flawed after harvest due to a lack of enough storage and processing facilities. Currently, chemical control is the most commonly used approach against pests. Lots of chemicals that are toxic to stored-grain pests, including insecticides such as organophosphates, synthetic pyrethroids and fumigants such as methyl bromide and aluminum phosphide are still in use for their management. Use of insecticide is a straight forward and economical approach, but due to its toxic effects like residues, resistance, it is an unsafe for environment and human consumption. In search of alternatives, plant product like sweet flag rhizome powder @ 5% was found to cause100 percent adult mortality and recorded higher seed germination (85.67%) in sorghum. Eucalyptus oil recorded the most increased mortality of 26.1% in fumigation assay; Nano-formulation gives cent percent mortality three days after treatment at @ 250 and 125 ppm kg-1 in maize. Growth regulators like Buprofezin at 300 ppm in rice grains reduce progeny number and reducing weevil populations by 98% by pteromalidslike L. distinguendus.