Sorry to know that you still face troubles with the littering in your surroundings. We also have the same problem as you here. It’s great that you sent your e-mail to the political parties and I agree with you on those points that you mentioned in the e-mail.
I especially like your idea that there should be policy that can sensitize the citizens to the problem, especially, at their earlier ages, in kindergarten and school.
Hope the problem can be solved in near future. ;)