A Study of Certain Acetals as Synergists for Pyrethrins or Allethrin in House Fly Sprays

Seventeen synthetic acetals were tested in space sprays by the Campbell turntable method against house flies, Musca domestica L., as candidate synergists with pyrethrins or allethrin. Nine compounds, all containing the 3,4-methylenedioxyphenyl group, were found effective at the concentrations used. Physical properties of all compounds are also given.