When cleaning these types of windows, should i use the smallest applicator and squeegee I can get? Or cloths, what is the technique? Also, I was watching a video on youtube and it recommended pivoting squeegees, are these better? For cleaning liquid I use Unger's Gel, is this what I should regularly buy? Or just use washing up liquid? Should I just put hot or cold water in the bucket then apply the unger's or whatever cleaning liquid I use to the applicator? It just seems that when I clean windows with the applicator it doesn't get all suddy it seems quite clear, is it ok like this?