have in total of about 4 hours, 84qm complete with scarifier scarify once in one direction and then cross again. I have a large lawn with islands, which I have rescheduled this spring and meadow which islands were never scarify with a lot of weeds and moss. It has struck me that almost nothing was cut in the new lawn. In the ancient meadow was really neat with something. The device is very easy to pull through the floor and it was really fun to handle this. I would like to like to exercise in the garden and I am looking forward on the spring when I will perform the work again. The quality is very good, so professional tool!