Leaves really compress so you can fill and fill and fill. We weren't filling it up in a day with smaller sites spread throughout the city, but huge properties (groups of 40-80 homes) would fill it by noon. I figured the trailer full was like 7 half ton boxes with sides on it after compressing.
We also used the unit for spring clean ups and on large acreages that we had to bag to save trips.
This unit over doubled the amount if spring clean ups and fall clean ups that our 9 grounds guys could do per day. It's mind blowing how much time is wasted by filling up trucks and trailers by hand and what the elimination of multiple trips to dump sites gains you per day.