An insect control substance for controlling certain flying insect pests in proximity to the substance includes a rubber crumb carrier having a plurality of rubber particles and a volatile hydrophobic semiochemical for attracting certain flying insect pests absorbed within the rubber particles forming a discontinuous phase of the substance. The insect control substance also includes a body of water forming a continuous phase of the substance within which the discontinuous phase is suspended. When the insect control substance is applied to an application surface the discontinuous phase is exposed to the surrounding air and the semiochemical within the rubber particles evaporates into the air around the application surface and attracts the flying insect pests to the rubber crumb carrier to facilitate control of the flying insect pests.
