We modified an existing model for European corn borer, Ostrinia nubilalis (Hübner), population dynamics and genetics to evaluate the effectiveness of oviposition deterrence in transgenic insecticidal corn for resistance management. We simulated two types of deterrence: one has moths reducing their oviposition because of lost opportunities to lay eggs (eggs lost) and the other has the deterred moths moving to the refuge to lay the eggs. The time to 50% R allele frequency was similar for the two types of simulated deterrence, but the densities of the European corn borer were 100-fold higher when the deterred moths oviposited in the refuge.