Our custodians stopped picking up broken glass boxes (purchased from lab supply companies) many years ago because they were almost always overfilled and heavy, contained contaminated glass and other nasty looking items. Stuff had a tendency to spill out when the boxes were carried and even breach the sidewalls. The research faculty resented that their grad students then had to take their own boxes out to the trash dumpsters. Our solution was to start using 5-gallon plastic pails. When the pail is full, the lid is sealed and the custodians can remove them without concern for their health and safety. The pails also have the advantage that they do not hold as much weight and have a handle attached for carrying. We are just transitioning to this practice and get a lot of our buckets from our dining services for free. I'm hoping this will work out better for everyone.