A brush for cleaning a trailer hitch receiver that comprises an elongated stem attached to a handle at one end and a cleaning head at the opposite end. The brush is configured so that a person can grasp the handle of the device and ream the cleaning head having at least two flat abrasive sides into the trailer hitch receiver so as to clean out accumulated salt, asphalt, rust debris from the receiver hitch. A method for cleaning a substantially square trailer hitch receiver using the aforementioned cleaning device.