[Phil J]

He y Guys
Did a really dirty first clean yesterday. Pre-sprayed and cleaned with pure water and virosol from a pump sprayer. Cleaned the front windows, went round back, cleaned them. Went back to the front to clean again with pure. Two of the window have a oily, greasy  residue which I can't seem to shift. I think it's the virosol, any ideas to get it off!
Driving me mad. Thanks, Phil. 

[Clever Forum Name]

More Virosol?

You neee a stronger degreaser or glass solvent.

[Tadgh O Shea]

Scrub the glass with a magic eraser pad and water until all the residues are gone.

[Phil J]

Thanks for the help guy's
What is a magic eraser?

[slap bash]

Glass is manufactured with lead and this reacts with the Virosol. Docter power and a green kitchen pad.