Update

So I went back to where my blue piece was hanging this morning.
It wasn't there anymore. Still, I think it lasted a good long while.
Especially given the frequency of human traffic that passes there!
Anyway, for me it was a huge success. I think it was the school workmen who came to repair the fence yesterday.
It got me wanting to do a bigger piece on that pole.
A better constructed one at least :)

On that note, I don't think any of my pieces are still up
But I shall continue!
Enjoy