Abstract: The vacuum floor brush cleaner is generally in the form of a rectangular three sided tray into which a vacuum cleaner brush attachment or floor cleaning unit may be placed or rolled. The bottom inside surface of the tray may have protrusions extending therefrom which engage the brush attachment bristles to remove dirt, hair, thread and other such accumulated debris. The tray may have an adjustable wire bar with protruding wire elements which can be raised and lowered depending on the vacuum cleaner brush attachment. In the case of rotating roller brush units used in floor cleaning units, the wire elements are of a length such that when the wire bar is at the appropriate height the wire elements engage the hard surface of the roller to remove entangled thread and other such debris. Rotating handles and gears as well as levers and gears or cams may be used to raise and lower the wire bar.