When I got this in the mail, my mom wanted to try it.  She had been wanting to wash the windows but it has not been warm enough too.  We put it together and it was really easy to do so.  The product was pretty easy to use but it left some streaks so you had to go back over them a couple of times.  It got the windows pretty clean minus some streaks which wouldnt go away.  I would recommend it to someone else as long as they did not expect perfection from it.