The service by Amazon was great and comfortable. It has, as always, went smoothly. But ... big but ... Unfortunately, the collection bag does not. Because the force with which the blade transport the verticutter to eject backwards is much too low. Much lower than for a commercial lawn mower. The moss is not at the back of the bag. But it backs up all the front. By the time the bag is half full, the moss is back on the grass. Ergo, all about 8m I could empty the collection bag. I think there we have the moss after scarifying faster by hand together amount revenge.