MF and windows...Look Out!
A lot of MF lints and MF lint on autoglass can be a huge PIA. Actually, IME all MF eventually lints, but so far my Griot`s PFMs for Glass are still OK, as are a few of my WWMFs (but not all of `em).
All of my "regular MF" lints. Even my (otherwise great) Plush MF Drying Towels. It bugs me so much I`m kinda fanatical about not letting those MFs ever touch my glass (other than those PFMs for Glass). It doesn`t usually bother me on paint (since it`s not really that bad), but some MFs do lint *that* badly so I`m careful what I use those for.