Something people do not do very often is clean their computer equipment. It is just a good idea to keep your Mac and peripherals reasonably clean. This article describes how to clean your Mac, from the screen to the keyboard. They recommend using a White Vinegar solution. I use other products designed for cleaning computers like iKlear, but I never use household cleaners. That is a no no. The article is very thorough. Check it out for some good advice on cleaning your Mac system.