Abstract: A bedbug protective coaster device supports a furniture leg of an article of furniture thereon. The device includes a body comprising a base member, a first annular wall and a second annular wall formed integrally with one another such that the furniture leg can be supported on a central area of the base member. The first and second annular walls surround the central area to define an annular space between the walls arranged to contain an insect barrier fluid therein. The integral body further includes an annular crevice formed in the body so as to surround the second annular wall. The annular crevice is arranged to receive a pesticide rated only for cracks and crevices therein. The device thus allows bedbug pesticides rated for cracks and crevices to be used in a barrier location between the floor and an article of furniture such as a bed.