I did a few curbside pick-ups this year on top of my normal clean-ups. I just have to say that it was a mistake. Every pile had some type of crap lodged in there that wound up taking me more time. Either they packed the heck out of the pile which meant it took longer just to pick it apart, or there was garbage, or toys, rocks, sticks, perennials, just JUNK. One that I did the other day the guy told me that there were some old pumpkins in one area, and a bunch of old 2x4's with nails in another area.
Now I only have 1 dump truck... the thing had been tied up for almost a month with leaf pick-ups... so that screwed up my tree work schedule for quite some time. Not something I was happy about.