There are three things in order from most aggravating to least that bother me when I'm working on a lawn. First, have you every tried mowing and there are cars everywhere on the grass and in the way? I hate it! Then it takes forever to get them to move the vehicles. Second, I hate trying to blow and clean up after when there are cars where grass and debris is underneath them. No matter how much you try the grass will STAY underneath the car. So aggravating. Third, you're trying to blow and the wind wants to go where you don't want the debris to go. Also is a pita when the picky neighbor is watching you so you don't get a piece of grass on their side, oh yeah well the wind will blow all your clipping over there where they shouldn't be. Well those are the things that really bother me when I'm mowing. What's yours?