The problems with this sweeper are several. (1) the nubs out front designed to protect things are completely in the way preventing one from sweeping close enough. You have to use a broom to sweep debris to the center of the patio then use the sweeper. (2) Debris gets swept into and under the debris catch container requiring one to pick up the sweeper to dump this extra debris stash into a garbage bin. (3) Right wheel on my sweeper repeatedly loosens and falls off. The basic premise is good but the design is flawed.