Deltamethrin is classified as a synthetic pyrethroid pesticide. It
is applied in stored wheat grain for the control of Tribolium castaneum
(Herbst), Sitophilus oryzae (L.), Rhyzopertha dominica (F.),
Cryptolestes spp. and Sitotroga cerealella (Olivier) (Agrolinkfito,
2012). Fenitrothion, on the other hand, is an organophosphate
insecticide used in Brazil for the control of S. oryzae infestation
(Agrolinkfito, 2012).