This film prevents the eggs of Diaprepes root weevils from sticking to the leaf. Each female can produce up to 5,000 eggs. She creates a kind of egg sandwich, nestling her eggs gently between two leaves. If the eggs fail to stick to the leaf, they fall to the ground and dry up or are eaten. In preliminary tests, kaolin film completely suppressed the depositing of eggs.
Kaolin also seems to prevent the weevil from feeding on citrus leaves.
Adult weevil feeding was reduced 68 to 84 percent on treated foliage.