-Do not use KlearScreen Packet on Old CRT Monitors
Do not use the ‘KlearScreen monitor cleaning packet’ on CRT displays that are older than 2 years. The coating on these CRTs may be damaged from internal heat and/or UV, and using KlearScreen can make this damage visible. It's important to note that the ‘KlearScreen monitor cleaning packet’ does not actually cause damage to the display; it can just make existing damage visible.