Should cities and towns start banning styrofoam cups and packaging?

I do avoid styrofoam cups generally, but don't avoid DDonuts for that reason, as the one time I tried it recently, I didn't like the coffee.

Where I run into a quandary is that I usually take out some of the food on my plate at chain restaurants that serve giant (to me) portions and use it my cooking; for example, I recently took all the sauteed mushrooms home from the plate with my turkeyburger, and used them later in a tomato sauced pasta dish. I'm both careful with money and don't like food waste. I wish more places had cartons like most chinese restaurants do instead of the styrofoam stuff.

I too prefer the waxed (?) cardboard take home containers that Chinese restaurants use (especially for their rice dishes).

Well, a lot of places do have cardboard cups now, but I'm no judge of how much change has occurred. Back in Venice, CA, when I'd walk the beach near the water during or after Santa Ana winds (when the prevailing wind was about the opposite of usual, thus toward the Pacific Ocean), there was styrofoam litter all over the place - but I've not walked it in the Santa Anas in about a decade, so maybe there is some improvement I don't know about, without checking cafes or dumpsters. What I'm getting at is wondering if an outright ban is a good idea or not, if people are already changing.
As in, then do we need cup police?

Bloomberg Considering Ban on Styrofoam Cups
http://newyork.grubstreet.com/2013/02/bloomberg-bans-syrofoam-cups.html?mid=grubstreet--20130208

Uh oh, I think I'm changing my mind:

http://nymag.com/daily/intelligencer/2013/02/your-paper-cup-is-destroying-the-world.html