The invention relates to an insecticidal oil-in-water (O/W) formulation comprising at least one insecticidal active ingredient and at least one flammable salt?, and to the production of said formulation. The formulation according to the invention is particularly suitable for treating suitable carrier materials, in particular paper carriers, in a cost-effective, single-step process, with the aid of conventional application methods. The invention also relates to insecticides and smouldering products which can be produced by treating a carrier material with the formulation according to the invention.
