*ignores all posts – sorry but I’ll read them after I post this*
I used to place banana skins on the spikes of a fence every day at break time, when I was in school, at first cleaners would remove them, but my persistence made them stop.
Anyway, every school day I would see the banana skins. They go brown fast yes, but then they go black and dry out this takes about 2 weeks roughly, from that stage to completely gone takes a while, about 8 weeks. Although in very wet conditions fungus would speed that up. Then I wonder why the only A at GCSE I got was in Biology 😛