I was using one of those the other day at my job. We had it on a New Holland LS180 Skid Steer. The thing works great. Actually there is no vacuum. You drive forward and there is a brush sweeping the debris forward and over the top into a sort of bucket. To get the last bit you reverse the direction of the brush and go slow and it works like a dust pan sweeping it into the bucket. When you want to empty it you just lift it up and dump that bucket I refered to where ever you want. Obviously as you can tell by the pic that JJ posted all of this is enclosed. Ours even has a curb broom. Next time I use it I will try to get pics.