Patent ID: 8025894

Claim:
A formulation comprising: (a) a single layer microcapsule comprising: (i) a capsule wall comprising polyesters, polyamides, polyureas, polycarbamates, polyurethanes or urea-formaldehyde polymers; (ii) component (A) selected from the group consisting of Allethrin, Bioallethrin, Tetramethrin, Prallethrin, Cypermethrins, Esbiothrin, Permethrin, Fenpropathrin, Transfluthrin, Bifenthrin, Resmethrin, Bioresmethrin, Fenvalerate, Esfenvalerate, Etofenprox, Imiprothrin, Phenothrin, β-Cyfluthrin, Deltamethrin, Cyhalothrin, Imidacloprid, Acetamiprid, Thiacloprid, Thiodicarb, Carbosulfan, Carbofuran, Fenazaquin, Pyridaben, Fludioxonil, Imazalil, Pyrimethanil, Fenbendazole, Clotrimazole, Praziquantel, Fipronil, Pymetrozine and Pyridalyl, wherein (A) possesses insecticidal, acaricidal, fungicidal, snailcidal or vermicidal activity; and (iii) component (B) selected from the group consisting of piperonyl butoxide (PBO), sesamol, verbutin, MGK 264 and S,S,S-tributyl phosphorotrithioate (DEF), wherein (B) exhibits synergistic activity with (A) by enhancing its effectiveness; and (b) an immediate-release emulsion or microemulsion comprising an additional quantity of component (B), wherein the average release time of component (A) is delayed by a time of between 1 and 12 hours.