Fecha de publicación: -- Fuente: WIPO "tomato" This invention is founded upon a cementitious matrix engineered to preclude the ingress of insects and pests into structures, including buildings, storage facilities, and infrastructure. This repellent actively obstructs insect reproduction and interferes with chemical signaling and communication within colonies, making it ideal for use in granaries or poultry farms. The core innovation involves safeguarding the repellent agent within the alkaline cement matrix and guaranteeing its gradual, time-released dispersion. This is achieved by encapsulating the repellent essence—extracted from insect-deterring flora—in a two-layered, organically porous capsule composed of calcium and silica. The capsule's foundational structure is an organic mineral shell derived from eggshells. The organic within the outer shell gradually decomposes in the alkaline concrete, facilitating the slow exudation of the repellent gel. To reinforce the capsule wall and add a physical repellent barrier, these capsules are subsequently embedded within the pores of diatomaceous earth.