Took me a while to figure out the controls, WASD was an easy guess but to figure out how to pick up bins I had to mash the keyboard until something happened. The concept was quite simple, empty little bins into corresponding bigger bins. I would make the pick up button something other than E as due to my clumsy fingers I somethings hit E when trying to move UP which dropped my bin (frustrating). Make pick up SPACE instead.
Perhaps add in a mechanic where the Bin workers come and empty the big bins every so often and pay you cash depending on how much trash is in it, then you can use the money to buy more bins or hire someone to help you. (probably more work then the 72 hours allows).
Overall I liked it. :)