... I can seldom get them to wipe the lenses of my glasses completely clean without leaving a slight residue. Please note: if you wipe the same lens more than once, you're likely to pick up dirt from between the lens and the frame. After many years of using these wipes, what I do to rid myself of the residue is to use a high quality microfiber cloth afterward. But for this to do the trick, you need to make sure that you suds and rinse you cloth at least weekly. One other heads-up: be sure to seal the flap carefully, pressing out any air pockets. This will keep the wipes moist longer. Nonetheless, if you use one daily, the last few will be less moist unless you seal the packet into a zip-lock bag. Yer welcome.