But with all these green pluses, all I can think about is wool and moths. Remember those hideous moth balls when we were growing up? Workman explained that the wool is sprayed with a solution consisting of a boron molecule combines with an animal protein to prevent vermin damage and fire spread. According to Workman, their propriety solution binds with the protein fiber in the wool. He states other products, such as cotton or cellulose spray use an adhesive to adhere their boric solution to their product.