It worked a treat on the inside.
I put some in my spray bottle (found some vinegar in the pub's kitchen
) and wet them all first.
Then used my wet cloth to scrub them.
After that they barely needed buffing at all with the dry microfibre, and left no smears at all!!!!!
Magic!
Trouble is, it's not so good on normal outside squeegee work.
It kills the suds and makes turning the squeegee harder.
The smell bugs you after a while too.
So, to sum up...... I'll just use it in my spray bottle.