I have a few accounts at local maintenance shops that I leave buckets at and it works really well. I just made a cardboard template and spay paint to put my advertising on the side. although if you plan on trying to get into auto shops you might want to get something a little bigger unless you want to stop by a couple times a week. the one auto shop i receive from usually has a crashed vehicle that they fill up and that's what gets hauled away. The other auto shops have either a 15 or 30 yard dumpster that another scrapper supplies he comes by about once a month i'm told.