“Strong Teeth, Healthy Gums…and Kills Insects”

Fluoride – A known Insecticide since 1929

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“As pointed out in other patent applications of mine, the double fluorides of the alkali metals are useful insecticidal materials and can be formed from water soluble salts of aluminum by treatment with alkali metal compounds and fluorine acids in the proper molecular proportions” -Roscoe H. CARTER, Washington D.C. (Government employee): “Process for the manufacture of insecticides and method of making same”, US Patent 1,842,443; filed Nov. 15, 1929; granted Jan. 26, 1932