Wish litterbugs would hibernate over winter

Between Wendy's and Timmy Ho's in Perth, we get a lot of garbage dumped overboard. We are one large coffee, or 1 1/2 hamburgers south of town!
This latest customer seemd to supersize his order: one iced tea and hamburger and cheeseburger, plus fries.

Wendy's hamburger dumped overboard

Bought it at 11 pm, chucked it out,
I found it the next day

After the snow melted, I did a major cleanup. April, 2011

And again in the fall, several bags full.

They rolled the rim
and chucked it overboard.

 I emailed Wendy's to complain, heard nothing. I even put it out on Twitter, nada.

I shall have to go into the store...
Tim Horton's is the same. They need to come up with a strategy for challenging this issue.
We can't teach some how not to litter, but maybe there is a way to deter them.

Collection from Earth Day 2006,
Sir Win. Middle School