Freutrall early and Valencia late both exhibited strong larvicidal activity against Aedes albopictus, with respect to percent mortality, Valencia late caused highest mortality (81%) after 24 hours of exposure then
freutrall early (68%), while after 48 and 72 hours again Valencia late exhibited highest
mortality (88 and 97%) then freutrall early (74 and 88%) as shown in Fig. 2.