a technique for comparing pesticide penetration through fabric was devised. it involved passing fabric swatches through a controlled spray system and measuring the pesticide residue transferring on and through the tested fabric. six variations in fabric were selected for testing: 100 cotton woven chambray scotch-guard treated chambray, tyvek, crowntex, and two variations of gore tex. guthion (azinphos-methyl) was chosen as the insecticide for controlled use in this experiment because of its widespread use and relatively high toxicity. gas chromatographic analysis of the amount of guthion transferred through the outer fabric was made by use of analysis of variance (anova) and duncan's multiple range test