Most building and cleanout debris is welcome. The limits come from California's hazardous waste rules and from what the county landfills will take.
Riverside County's landfills only take non-hazardous waste. They turn away chemicals like fuel, cleaners, oil, pesticides, acids, and paint. Asbestos, explosives, contaminated soil, and treated wood waste are also refused. Every load can be checked at random, and a load with hazardous items can be reported to the District Attorney.
Hazardous waste, liquids, paint, solvents, fuel, and asbestos can't go in a standard dumpster either.
Some items go to separate recycling areas at the landfill, not the regular pile. That list includes appliances, big metal pieces, batteries, light bulbs, electronics, tires, and mattresses. Tell us about them when you book. For paint and chemicals, the county runs a household hazardous waste site at 1780 Agua Mansa Road on Saturday mornings.
If you're not sure about something, check with your account manager before you toss it.