N,N-diethylphenylacetamide--a new repellent for Periplaneta americana (Dictyoptera: Blattidae), Blattella germanica, and Supella longipalpa (Dictyoptera: Blattellidae).

The residual repellency of N,N-diethylphenylacetamide (DEPA) was studied against American cockroach, Periplaneta americana (L.); German cockroach, Blattella germanica (L.); and brownbanded cockroach, Supella longipalpa (F.) at various concentrations. DEPA exhibited residual repellency for 4, 3, and 2 wk against American, German, and brownbanded cockroach, respectively, at a concentration of 0.5 mg/cm2.