Most construction and cleanout debris is fine. The limits come from Washington State law and from the county facility that takes your load.
Washington law says mercury-containing lights, like fluorescent tubes and compact bulbs, can't knowingly be put in the trash headed to a landfill or incinerator. Pull them out of a shop or barn cleanout before loading.
Asbestos needs a permit before removal. The county sends asbestos questions to the Olympic Region Clean Air Agency at 360-539-7610, and asbestos must be prepared and labeled before the county will take it, so it can't ride along in a regular dumpster.
Hazardous waste, liquids, paint, solvents, and fuel can't go in a standard dumpster either. Thurston County residents can take household chemicals free to HazoHouse at the Waste and Recovery Center, open daily from 8 a.m. to 4:45 p.m. Tell us about TVs, monitors, and refrigerators before you load them, since they carry an extra fee.
If you're unsure about an item, ask your account manager before it goes in.