Seeds of Alligator pepper (Aframomum melegueta, Schumann) and African nutmeg (Monodora myristica, Gaertn) and pods of Aridan fruits (Tetrapleura tetraptera, Schumach and Thonn), were ground separately into powder and each tested for their efficacy for the management of the Dermestes maculatus (Degeer) larvae in dried African catfish (Clarias gariepinus, Burchell). Fifty grams (50g) of the three plant powders were mixed (1:1:1) to also form a fourth treatment for trial against the beetle larvae. Different concentrations of plant powders of 0, 2, 4, 6, 8 and 10g/20g of dried fish (which corresponded to 0%,10%,20%,30%,40% and 50% w/w) were tested against twenty uniformly age (0-96hrs old) beetle larvae over one month duration in the laboratory with each concentration replicated three times. The results confirmed biopesticidal potentials of the plant powders as effective larvicides. T. tetraptera and the mixed powder gave the highest (P<0.05) mortalities (100%), followed by M. myristica (85%) and A. melegueta (55%) at 10,20,30,50 and 40% plant powders concentrations respectively over a corresponding period of 27 DAT (days after treatment). The order of effectiveness was: T. tetraptera > Mixed powder > M. myristica > A. melegueta.