I bought one a few years ago, used it for two days and went back to my back back sprayer until I bought a truck mounted spray unit the following week. In my experience it took me more time to fool around with putting it in and out of my spreader, cleaning out the spreader each time I used it and also it was very top heavy which made it very difficult to use on hilly lawns and lawns with alot of tree roots or bumpy terraine. I think it was a great machine and worked just fine, it just was not convienent for me.