Laboratory experiments were carried out to investigate the effects of maize husk ash and mustard seeds powder (Brassica an’ensis) on mortality and reduction in Fj progeny of Sitophilus orvzae (L.), Rhizopertha dominica (F.). Triboliurn castaneurn Herbst) and C’allosobruchus maculatus (F.). Results showed that adult mortalities were concentration- and exposure period- dependent. Mortality increased with increasing the exposure period and concentration, Reduction in F1 progeny was also concentrations dependent and reached its maximum at the highest concentration used. Mustard powder was more effective to the adults of S oryzae, R. dominica and C maculatus than maize husk ash. Based on the LC90 values, T. castaneum adults were the most tolerant species to the two products followed by R. dominica, C’. maculatus and L oryzae.