Of course, there are better, more powerful scarifier. But the value for money was unbeatable. I've scarify to the 1000 square meters of my lawn and am satisfied. And I have not even tried the fan roller. When I consider that I am otherwise drove nearly 30 km to the hardware store and just under 30 euros have paid rent for a day and I can rattle off now, if I have time in between times, the part has almost paid for itself in two years. The collector is scrap. But the same goes for better models. If correct herb and moss is to scarify, I let the stuff lie and rake prefer. Or little tip: If the moss is less, the greens are, let it dry a little and then "pick up" the lawn Truck. So I do this with the foliage in the fall as well. So enough babble.