Techniques for monitoring populations of Paramyelois transitella (Walker) were compared in almond orchards in the San Joaquin Valley of California. Adult populations were monitored with pheromone traps containing virgin ♀ moths and with BL traps. Oviposition trends were monitored with an egg collection device baited with an oviposition attractant and by periodic examination of mummy nuts collected from the trees. Results of these comparisons showed that the artificial egg trap accurately reflected seasonal population trends of the moths and egg laying patterns by ♀ until hull-split of the new crop began and competition for oviposition was created between traps and nuts. The use of oviposition traps offers an accurate, economical, and simplified method for monitoring navel orangeworm populations in comparison to other available methods.