Further Studies of Repellents in Alaska1

Abstract

Applied to the skin, dimethyl carbate and propyl N,N-diethylsuccinamate gave the longest protection times. With mixtures of repellents, that containing dimethyl carbate showed an avg. protection time of 95 min. and was distinctly more effective than the others. Of 12 materials tested on fabrics, 2-[2-(2-ethylhexyloxy) ethoxy] ethanol was most durable. Of 12 repellents tested against sand flies, dimethyl phthalate was by far the most effective for application to the skin. As clothing treatments, neither pyrethrum nor 2-[2-(2-ethylhexyloxy) ethoxy] ethanol was highly repellent.