Kärcher S 4 Twin Sweeper

I bought this get the leaves picked up off my artificial grass but it did not work well. It might work better on natural grass. I did not find it easy to use.

I bought the Karcher S4 to replace a Hoover sweeper that had finally broken beyond repair after 15 years. I had certain expectations that I thought would be met by the S4. Sadly, those were not even close to being met.The receptacle bin is flat which causes debris to pile up at the opening that leads to poor performance. If it were inclined more to help move debris to the back easier would help. Additionally, having the opening in the back seems unnecessary. Save the cost of the back brush and engineering and put it in front so those brushes can fling debris into the receptacle easier. I even bought the "stiffer" brushes which did little more than drain my wallet of money.I should have returned it when I was still in that time frame, but I thought I would try using it for lighter duty work and by the time I got to that and discovered it was still useless, it was too late. There is just no point during the usage where this product even shows promise. Since I can't do much else with it, I may try to modify it somehow to make it worth even keeping around.I would avoid buying at least this model. I don't know if the S6 would perform any better, however the price difference between the two is ridiculous. I would like to be able to say at least one positive thing about the S4, but it seems to go out of it's way to prevent that from happening.