I purchased mainly to clean heavy dust from our large tiled patios in the desert. It doesn't do well with fine dust (dirt) or quarter- small gravel which we also have need to clean often after storms. However, leaves or other small debris it picks up well.
Seems to work ok except the front crazy wheel should provide about 1/2 inch more for the front brushes. One has to hold the front up to keep the front brushes turning as they are designed.