Is banana peel the universal trash sign?

I came across this trash can and its sign in an underground parking hall in downtown Helsinki. It caught my eye because while looking at it, it struck me that the banana peel really does seem to be one of the universal signs of trash.

In hindsight, it really does work as a great symbol for that.

1. The banana peel is easily identifiable, and doesn't get mixed up with an image of a banana. (Or any other object.)
2. There are very few applications for banana peels, at least besides a comedic cartoon implement where it functions as a visual icon/symbol for slipperiness.
3. It and the trouble of getting rid of a banana peel is familiar to most people. I would guess that 90-99% of western people have peeled a banana, and most of them within the last year.
4. This is widely multilingual and multicultural, as bananas are a common throughout many continents and cultures.

I also note that getting rid of a banana peel is a bit cumbersome - you can't just put it in your pocket like a candy wrapper as it will make a mess. Nor is it usually feasible to discard such a peel nonchalantly, it's a bit too large to just drop on the street.¹ And that means that people have a sort of emotional connection to how useful it is to have a place to drop a banana peel in particular.

Besides the "banana peel as universal trash symbol" I do want to note from this sign the rest of the depiction. We do not simply have the banana peel in there, but a human hand lifting said banana peel. So besides signaling the viewer that trash can be placed here, we are perhaps seeing a secondary signal that trash in general should be collected and not thrown around. This interpretation gets support by the fact that the trash can has the logo of the parking hall company, Aimo Park.