Those demo dumpsters are the worst, no drainage plug. After a heavy rain storm it's filled with water. It's good for demo work since all the loos bits are contained in them, but residential usage it's a mess.
Holy cow that is inneficient....there are other systems out there that take a small amount of the time it took this guy to empty one bin....really....get rid of it and move on.....
Front load garbage trucks are probably 10x faster... they lift the dumpster up and dump it all into the top of the truck. This system is more for use in tight areas with wires etc where there are height restrictions. It’s also safer, to an extent.