Handheld vacuum cleaners are great at picking up dirt and maintaining a clean home, but they can become fairly dirty themselves. Making sure you keep your handheld vacuum clean not only cuts down on dust in your home, but it will help you vacuum last longer. To clean your vacuum, empty the dust cup after each use, and many dust cups can even be rinsed and dried. The filter should be regularly cleaned and changed, and the outside of the vacuum can be wiped down with a rag and cleaner.