Is there a stray shopping cart in your neighborhood?
Report it by contacting California Shopping Cart Retrieval Corporation at:
Toll Free: 800.252.4613
Or submit the information online at: http://www.cartretrieval.net/support/request_cart_pick_up.asp
California Shopping Cart Retrieval Corporations works with most major grocery and retail stores for cart retrieval. When calling, leave a detailed message including the exact location of the cart (including major cross streets) and the name of the store the cart belongs to. Carts are generally retrieved within two to four days of being reported.
You can also use this iphone app for reporting abandoned carts.