I have been conducted research about artificial nest for predatory ant Oecophylla smaragdina (Hymenoptera : Formicidae) in cacao field. They are a potential predator for cocoa pod borer (Conopomorpha smaragdina). In my research, the ants reject artificial nests from bamboo and dried cacao leaves inside. It makes me surprised, they prefer artificial nest from bamboo and dried banana leaves inside it. I think it similar dried leaves?what happen?