There are times in life when you need to make a decision that will either save you a lot of money and sorrow in the long run, or it will prove to be a mistake. When it comes to prolonging the life of your printer, the smartest way to go would be to look into Canon Printer Dust Covers or maybe HP Printer Dust Covers, depending on what you own. There are four different situations when you should think about making such an investment.