Maintenance of the self-cleaning glass

I have found this information on the Pilkington Activ glass page.
This type of window don’t requires any polishing under normal rain conditions. In case of a long dry period the window may need to be cleaned. To remove the deposit of dirt, the glass can be washed with a soft cloth and warm soapy water and then rinsed clean. The coating will be naturally activated after a few days.

Reply to [B]Mart[/B]:

> How this type of glass can be cleaned and maintained? Is it delicate the coating? Which solution or detergent should be used?
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You should also avoid using any abrasive cleaners. The best way is to clean it with water which you reins it from the top to the bottom of the surface. Doing so you will certainly remove all the dirt off.