I have been searching window washer fluid, but not available anywhere. So I have started using mineral water. I think though distelled water would do fine and will not choke the lines and nosels. Somebody said add a mixture of Glint and plain water. A chota at Toyota workshop suggested water with pentene shampoo.
But @Storm suggestion sounds good. White vinegar would help keep the lines unchoked and remove dirt fast from the window glass.