well, i keep getting more and more frustrated with my windows. everytime i do windows, both inside and out, in looks clean. however, whenever the sun hits the windows at a certain angle, it seems that theres always a place that i miss, and no matter how many times i do it, it seems theres always a place that i seem to miss. it stands out like a sore thumb.anyways.....

1.what product(s) do you use for windows? is there like a product that dominates in cleaning windows?
2. does that certain product work on removing those nasty water spots?
3. are there any waxes or polishes i can use on windows? or should i just use the regluar waxes that i have already?
4. what does claying windows do?