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How often should I change the bag or dust cup in my Electrolux Vacuum?

The bag of a vacuum should be changed at least once a month, and a dust cup should be changed when it is 2/3 full. Some vacuums may require more required cleanings if you have a larger space to clean or there a lot of children, pets, or foot traffic in the area. If you are using the vacuum for fine dust and debris is should be cleaned more than once a month to prevent clogging.