Abstract: Use of formulations consisting of suspo-emulsions comprising a microcapsule suspension, the microcapsules including at least one active ingredient selected from the pyrethroid and/or neonicotinoid classes, at least one synergistic agent, and an emulsion comprising at least an active ingredient of the above classes, and at least one synergistic agent, the microcapsules being formed of polyurea, obtainable by inter-facial polymerization of diphenylmethylen-4,4?-diisocyanate, optionally in admixture with polymethylenpolyphenylisocyanate, the formulations having a prolonged knockdown and killing effect, even of three months, even of six months or even of nine months, the suspo-emulsions comprising: component A): microcapsules in suspension comprising inside the microcapsule at least one active ingredient, a synergistic agent, optionally a solvent, the total amount of these components being not higher than 50% by weight with respect to the weight of the suspension A), the complement to 100% by weight of component

Abstract: Use of formulations comprising polyurea microcapsules obtainable by interfacial polymerization of diphenylmethylen-4,4?-diisocyanate (MDI), optionally in admixture with polymethylenepolyphenylisocyanate (PAPI), said formulations having a prolonged knockdown and killing effect longer than at least 3 months, preferably at least of 6 months, still more preferably at least of 9 months from the application, wherein the microcapsules comprise: an active principle selected from the pyrethroid and/or neonicotinoid classes, synergizing agents selected between PEO and Verbutin, the concentration of the active principle in the microcapsule as % by weight on the total of the microcapsule is comprised between 1 to and 60% the average diameter of the microcapsules is comprised between 2 and 50 ?m.