No steaks at all

This is the best glass cleaner that I have ever used. It truly does make the glass invisible! It comes in a spray can. I used it with a microfibre cloth and sprayed the windows. Wiping off was easy . They seemed clean but the true test is a bright sunny day. It literally looked as if there was no glass! Not only that, but they stayed that way much longer than other glass cleaners that I have used . I have used it on bathroom mirrors with stuck on toothpaste and got the same amazing results.