I checked with my local Apple store and the guy there told me that useing the same alcohal based wipes I use for my glasses might damage the screen. Is this true? Or was he just trying to sell me the alcohal, ammonia free wipes they had in the store? They cost $15/ a box of 20. Perhaps I could find some alcohal, ammonia free wiped on amazon. That's where I get my current Zeiss wiped, 180 for $15 with free shipping. Hopefully they work as well as my current ones and are as affordable.