I don't know if it's only in my area, but some bird poo this last couple of weeks is the hardest to shift that I have ever experienced.
I had to get the ladders off last week and again today, no amount of soaking and leaving helped.
With one lot today I had to go up the ladder, and then come down again to put a new blade in my scraper, and that was after soaking, I have found cement easier to get off, what the hell are these birds eating, super glue?