Five insecticides: boric acid dust, Nibor-D dust (98% disodium octaborate tetrahydrate), Niban-FG granular bait (5% orthoboric acid), LesCo granular bait (5% orthoboric acid), and EcoExempt dust (4.5% 2-Phenethyl propionate, 1.75% eugenol) were evaluated for their efficacy to laboratory and/or field strains of German cockroaches. LesCo bait and EcoExempt dust were not effective against German cockroaches in choice tests. Niban-FG, boric acid dust, and Nibor-D induced significant higher mortality than the control to a laboratory strain at 2-3 d after exposure (P < 0.05). The field strain was much less susceptible to Niban-FG bait and Nibor-D than the laboratory strain. EcoExempt was highly repellent to the German cockroaches when applied at the label rates (0.02-0.05 oz/ft² ). Cockroaches did not avoid boric acid dust treated harborages at the same concentrations.