What a friend from Japan explained to me (Sam), was that in order to deter the crows and rats, Japanese authorities developed the perfect, slickest surface know

What a friend from Japan explained to me (Sam), was that in order to deter the crows and rats, Japanese authorities developed the perfect, slickest surface known to humanity. And it worked! Rats could not climb the sides of the cans, and crows would slip and fall when they landed. It was a good time for Japan, but unfortunately there was a horrible side effect. No one could get a hold of the cans, to empty them. Soon trash overflowed the cans, just as you said! Admitting defeat, the cans were eventually blown to pieces. This explains why Japan has trash on the streets, and why Japan had overflowing trash cans. But this is all fixed now. As you know, Japan has no litter, and no one would ever stoop so low as to liter on purpose.