I used to work on Greenmount Ave. We could see an alley across from the shop, every couple of months, when the trash got about hip high, a city dump truck would come by and back into the alley. They would load the dump truck and go further back until the truck was full. Then they'd send another truck.
Bags of household garbage, furniture, old appliances, rugs, etc.
After about a month you could see the trash building up again.