Ocimum gratissimum essential oil and modified montmorillonite clay, a means of controlling insect pests in stored products

► Structural modifications of montmorillonite clay improve its adsorption capacity. ► Mont-CTMA-Ocimum gratissimum formulation is more toxic than Mont-Na-O. gratissimum. ► Remnant and stability effect of essentials oils are improved in insecticidal power. ► Local clay and essential oil are an alternative way for environmental management.