A method and composition for the method for preventing insect infestation
that comprises applying to the area to be protected an effective amount
of solid material coated with by treatment with a composition comprising
a silicone polymer, and an essential oil. A protective effect by reducing
the population of harmful biological pests in the locality to be
protected is provided. Protection by penetrating the material to be
protected with the silicone polymer and optionally an essential oil is
also disclosed.