Most household and renovation debris can go in the container. The limits come from Pennsylvania's waste rules and from what the receiving site will take.
Pennsylvania's Covered Device Recycling Act sets up recycling programs for computers, laptops, monitors, and TVs. The state's electronics recycling page notes that broken devices may count as hazardous waste. Keep electronics out of your dumpster. Philadelphia residents can drop them off at a City sanitation convenience center instead.
Hazardous waste, liquids, paint, solvents, fuel, and asbestos can't go in a standard dumpster. Tires and appliances with refrigerant should be set aside and mentioned when you book.
Clean soil, brick, block, concrete, and asphalt are treated differently when kept separate, since the state lets them be used as clean fill. A separate load of that material can cost less.
If an item gives you pause, ask your account manager before you toss it.