No litter zones?

I was driving down a small road last night when I saw a sign that said “No litter zone” and some smaller text beneath it that I couldn’t read before I passed it up. Now, it’s my understanding that littering is illegal in all ‘zones’ so my question is why was there a sign saying that this area in particular was special?

I guess maybe the small text stated that fines were increased there, but I can’t be sure until I pass it again.

Just a little confused… :smack:

Might be a sign advertising the group who’s picking up the litter, thereby creating a “no litter zone”.

But on the other hand, here’s the first hit on Google for “no litter zone”
http://www.ci.long-beach.ca.us/irb/home/lbb/no_litter_zone/

Actually, I think such areas are targeted for special enforcement, due to litter problems in the past. The fine might be higher, or the crime raised from an infraction to a misdemeanor, or something like that.