Patent ID: 8025895

Claim:
A pest control composition comprising: a partially hydrolyzed porous granular starch; 30 to 50 percent pest control agent absorbed within said porous starch, said pest control composition comprising an oleaginous material that is film-forming on a water surface; a urea-based binder and a sulfonated lignin binder; said pest control composition being in the form of discrete plural particles of a compressed mixture, said particles comprising pellets produced in a pellet mill, the partially hydrolyzed porous granular starch and binders included in amounts effective to provide said particles with a crush strength of at least 300 grams, wherein the crush strength is measured by selecting a sample pellet from said pellets and applying a force of compression at a speed of 1.0 mm/second and determining the force of compression at which the pellet cracks and breaks, the amounts of the partially hydrolyzed porous granular starch and the binders also effective to provide said particles with a release characteristic effective to release at least 50 percent of the pest control agent within 24 hours of the introduction of the pest control composition to a water column at 25° C.