A bait station for controlling insects such as yellowjackets and other wasps includes a housing that is formed from bottom vessel where insecticide-laced bait is positioned, and a top portion having apertures or holes that is sealable to the bottom vessel and allows for entry and entry of insects to be controlled. A mixing top may be further included that is applicable to the bottom vessel and enables bait to be mixed inside the bottom vessel. The ingredients of the bait are placed into the bottom vessel, and the mixing top is attached and sealed to the bottom vessel, which is then shaken to mix the ingredients to evenly spread the insecticide across the bait and throughout an interior surface of the bottom vessel. The mixing top is removed and the separate top portion is sealed to the bottom vessel, forming the bait station which is deployed to attract insects. The insects enter the bait station and either grab bait or coat their bodies with bait, enabling a transfer of effective doses of slow-acting insecticide to their nests following exit from the bait station. A method of controlling insects also enables bait to be mixed together with an insecticide without transferring the treated bait to a different container, without external devices, and in a way that does not risk spills or splashes.
