Ordinary construction and household debris is welcome. California's rules on hazardous material are strict, and the county landfill adds a few of its own.
The state treats hazardous household products as illegal to put in the garbage at all. CalRecycle lists what is banned: fluorescent tubes and lamps, LED bulbs, every kind of battery from AAA to car batteries, flammables and poisons, acids and bases, pool chemicals, pesticides, latex and oil-based paint, non-empty aerosol cans, solvents, antifreeze, motor oil and oil filters. Tires are banned too, to keep down tire fires and standing water.
Electronics are treated as hazardous waste in California. Televisions, monitors, laptops, printers, and microwaves have to come out of the load and go to a collection site.
Asbestos, which turns up in older Costa Mesa roofing, flooring, and cement, needs a licensed abatement crew rather than a container.
Two county rules are worth knowing before you load. Clean broken asphalt is no longer accepted at the county landfills, so a driveway tear-out needs a recycler instead. And the county takes only waste that started in Orange County, with proof of origin at the gate. Ask your account manager about anything you are unsure of before it goes in.