Died in detail the kind of damages in packaging for two insects 1st damages created by insects as punctures, holes and entry through holes as penetrations second damages as a consequence of the plastic packaging character like sealing defects and entry of insects by way of these defects as invasions which had been counted separately. Further all round categorization in between these two insects is completed for the initial time statistically as penetrator or invader of packaging. Fumigation in the undamaged foodstuff packaging infested with these two insects was accomplished with phosphine to choose general about these packaging. Combined results of study of damages in packaging films and these of fumigation by phosphine for the mortality of those two insects would reveal the best plastic packaging for the management of these studied pest species.Components and MethodsInsects The heterogeneous populations of R. dominica and T. castaneum had been collected from distinctive regions of Punjab. The collected populations were deposited in laboratory of stored item insect pests below offered collection units for each species in Division of Entomology, Evatanepag biological activity University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Pakistan. Lesser grain borer was reared in jars containing (1 kg volume) wheat grains whilst red flour beetles had been reared on a diet program consisting PubMed ID:http://www.ncbi.nlm.nih.gov/pubmed/21396448 of complete wheat flour and yeast (95:five by weight) in jars at optimum conditions of temperature 28 6 two C and 65 6 five RH below dark conditions (24 h). Cultures are maintained in stored grain insect pests rearing area provided with an air conditioner and humidifier (U650 Plaston, Switzerland) to maintain the optimum temperature and relative humidity ranges. Temperature and relative humidity data are recorded with thermometers and Hygrometers (Hygro Haar Synth, Germany). For the confirmation of insect species, samples of both insects have been preserved in 75 ethanol. These have been identified as T. castaneum (Herbst) (Coleoptera: Tenebrionidae) and R. dominica (F.) (Coleoptera: Bostrichidae) by utilizing a binocular microscope at 10and comparison of specimens with our prior cultures and readily available literature. Newly emerged adults from cultures have been taken and used in experiment. Uniform age populations were obtained by letting 50 pairs (male and females) of T. castaneum to lay eggs on a diet consisting of complete wheat flour in distinct glass jars for any period of 1 week at optimum circumstances of temperature and humidity. Following that adults have been removed and substrate meals with eggs was left for egg development for any period of one month. Following 1 month in the date of sifting parent adults when sufficient adults had emerged as new generation these have been utilised in tests. R. dominica were reared in entire grains of wheat to get a period of 3 months. When enough adults in the culture have been generated these have been employed in packaging testing. Packaging Components Three distinctive kinds of packaging materials namely PP, PE, and PVC with two thickness levels have been purchased in the wholesaleJournal of Insect Science, 2016, Vol. 16, No. 1 plastic marketplace of Lahore Pakistan 350 PKRskg. Thicknesses in the packaging supplies have been measured with digital micrometer (Mitutoyo Corporation, Japan). Plastic packaging materials are offered within the type of plastic sheets (10 12 inches length). From these sheets compact plastic bags (eight ten cm size) were ready employing a pair of scissors and sealing machine generally known as impulse sealer to later fill them w.