Always make sure to clean out your computer inside the case if you own a desktop. Heat is one of the worst things for your computer (aside from water). If dust starts to cake inside your machine, it’s like giving it a warm blanket. If you are diligent, and clean it out regularly with canned air, it will be fine, but if you wait, and the dust cakes on the inside of your fans, nothing less than an air compressor will remove the dust (unless you want to scrape it off by hand), as canned air will not have enough pressure. Dust can cause your computer to overheat and fail and can be a costly fix. Also remember to never us a vacuum on you computer, as they can static charge the air and create a static electricity spark that can harm RAM or Processor. It’s a great and easy way to keep your computer healthy. If you own a laptop, just blow out where the intake and exit holes are for the fans. Also blow out around your keys on your keyboards… it’s amazing all the stuff that falls in there!!