Most cities maintain an online list of items that can be recycled, but sometimes those lists are hard to find in labyrinthian government websites, and they don't always show up in Google searches. Here are directions on how to find the lists for some major Southern California communities, plus notes giving some idea of how the definition of recyclable can differ from city to city.
Los Angeles:www.lacity.org/san/, click on "Solid Resources Program," then "Recycling," then “What You Can Recycle at the Curb.” Items OK in the blue bin include all plastic with the recycling symbols 1 to 7. Foam cups and packing peanuts too.
Glendale:www.ci.glendale.ca.us and in search field type “Public Works Guidelines for Automated Collection.” Accepts all cardboard boxes but no juice boxes or milk cartons. Wine bottles are OK; broken glass is not.
Long Beach:www.longbeach-recycles.org, then click on "Recycling."
Huntington Beach (and other communities):www.rainbowdisposal.com and under "Residential" click on "Huntington Beach," then “What goes where?” Accepts plastic bags, pet food tins and coat hangers but not packing peanuts.