I have job to weed and apply mulch to about 1100 sq ft of bedding. The beds are in terrible shape with weeds growing everywhere. I am thinking of buying a Mantis Tiller or similar cultivator to help me with the job. I have a full size rear tine tiller but its just to big to maneuver in the tight spaces of these beds. Is the Mantis any good? Will it clean up the weeds so I can apply mulch? I don't want to be digging up top two inches of soil to get rid of the weeds and Round-Up is not an option.