Most household junk and building debris is fine to load. The limits come from Georgia's landfill rules and from the facility that receives your load.
The Georgia Environmental Protection Division requires yard trimmings to be kept apart from other trash and bans them from lined landfills. Grass, leaves and small clippings count. Tree trunks, stumps and limbs from land clearing are treated differently, so ask how to handle them.
The Paulding County Landfill won't take batteries, computer equipment, gas tanks, oil, wet paint, tires or crossties. Dried paint is fine there. Refrigerators and air conditioners carry an extra fee unless you have proof the freon was removed.
On top of that, hazardous waste, liquids, solvents, fuel, and asbestos can't go in a standard dumpster.
If you're unsure about an item, ask your account manager before you load it.