A plug for enclosing a bumper compartment of a vehicle which will maintain the compartment pest free, allow air flow therethrough and securely retain accessories placed therein. The plug includes a front, a body and a rear, with the front and rear attached to the body. The front defines a pair of openings while the body and the rear define a pair of cavities. The front openings are in communication with the body cavities to provide a handle for easily grasping the plug for removal and insertion. Apertures are formed in the rear to allow for air flow and also act as an insect screen. The plug also includes grippers attached to the exterior of the body for frictional engagement with the inside of the bumper compartment.