I was always so worried every time small rocks, sticks, etc. would fly out from under my deck and travel extreme distances so I finally did something about it. I got some 1/8" thick X 1.25 tall rubber and apllied it to the lower portion of my decks. The debris now hits the rubber and shoots out at more like a 45 degree angle towards the ground next to the machine. If some of you may think this isn't for you don't bash me, I'm just speaking of my good luck with this setup. I often work very close to big windows and expensive cars and was fed up with worrying all the time. This is cheap and effective. I just thaught I'd share the tip for some you who may find it useful.