Yeah, that’s pretty picky. Guess she doesn’t towel off mirrors. I searched mirror cleaning up top and got a couple AH Haa’s: I didn’t know you’re not supposed to use ammonia on mirrors, I did for 17 years. Old mirrors, yeah, I use non ammonia stuff. Also read SprayWay for mirrors. I do love the stuff and always have it in the truck. I also pass over mirrors with lint free cloth after cleaning. If this is your biggest gripe, learn and carry on.