Sorry to disagree RC but yes it's comes straight off and no it does not damage the poly carb as a squeegee blade holder has no sharp edges
Maybe it's safer than using " unknown chemicals " onto the plastic without testing first?
Darran
ive never had any come off with just water without spending a long time and hard work getting them off. plus you dont kill the spors or the roots off with just water either so not giving the customer as good as a job.
the scraper might not have any sharp edges but any grit on the roof that you are scraping at can damage the roof.
plus this isnt a unknown chemical at all, its from a leading cleaning chemical maker, that started in 1968 and there uk factory cover 16 achres, plus several over the world.
this chemicals main use is floors, walls, kitchens and food plant machinery.