Color print advertisement for Thanite, a toxicant manufactured and sold by the Hercules Powder Company for use in pesticides and insecticides. The advertisement features illustrations of insecticide sprayers, as well as an enlarged figure of a dead housefly. The accompanying text describes the effectiveness of Thanite as an insecticide spray. This advertisement appeared in Soap & Sanitary Chemicals.

Formed in 1912 as part of an anti-trust settlement with DuPont, the Hercules Powder Company (later Hercules Inc.) initially specialized in the manufacture of explosives and smokeless powders and subsequently diversified its business to encompass a variety of industrial products, including pine and paper chemicals, synthetics, pigments, polymers, and cellulose.