Flit gun

A Flit gun is a hand-pumped insecticide sprayer used to dispense Flit, a brand-name insecticide widely used against flies and mosquitoes between 1928 and the mid-1950s. Although named after the well-known brand, "Flit gun" became a generic name for this type of dispenser. Once commonly found in households, hand-operated Flit guns have been replaced by aerosol spray cans and fallen out of common use.