I've had 13 of these towels for a while. In general I love them. I've noticed for a while now that they leave lint or fibers on the surface. I use these towels and several dozen vroom towels for windows and drying. If I did the windows or drying with 2 of the Cobra towels I'd have a lot of lint left on the surface. Most noticeable on the glass. I'm in the habit of making sure the Cobra towel is the first pass towel and a vroom towel second to remove any lint. Since none of my other towels are giving me a problem I'm wondering what I can do. I wash them with laundry detergant (Cheer), extra rinse and dry on low heat. I have grunge towels for other tasks and separate towels that I use for taking off waxes and polishes.