I bought a Drywash spray ages ago, when it seemed fashionable. Today, seeing a quantity of bird droppings on the roof of the large kind, I considered washing and polishing them off. Seeing my almost full old Drywash in the garage, I gave it a go. Not only did it immediately dissolve the poo, it left a very creditable polished finish after giving it a bit of a buff-up.
Still not convinced about polishing the whole van with it without giving the van a wash first, but it certainly worked well on my dirty roof.
Still not convinced about polishing the whole van with it without giving the van a wash first, but it certainly worked well on my dirty roof.