Hiya, you probably all know about this already, but i case you don’t I just want to say use this fab product for windows and glass.. I started using this about 4 years ago when husband (renovating an old car) mentioned it. I grabbed it and whoa, what a game changer.. I have 4 large bifold units in my house and it’s a quick spray and wipe and they’re spotless with no residual smearing etc. I’ve also got a lit mirror in bathroom, it sorts this out in seconds with virtually no polishing, rubbing etc. Anyhow, I knew it was good, but got a new cleaning lady and she’s been advocating all round the village about how ‘fantastic’ this product is and so much better than the normal windolene etc. I know many of you will advocate vinegar, newspapers etc but seriously this is an instant game changer. Just wanted to share that / I’m not sponsored by the manufacturers!