This report presents the findings of an experimental study to determine the efficacy of selected dosages of two diatomacious earths and two silica aerogels applied to Hard Red Winter wheat as protectants against insect attach. There were two objectives. One to compare the effectiveness of Kenite 2-I and Perma-Guard, and two silica aerogels, Cab-O-Sil and SG-68 as wheat protectants with that of the standard application of malathion. The second was to determine the effect on commercial grade and milling properties of wheat and on baking properties of the four milled from treated wheat.