There are a few things you can do to clean an attic if you have one. First, make sure all of the items in the attic are properly stored and unloaded. This includes any boxes, cans, or other objects that may be blocking airflow or causing moisture problems. Second, use a vacuum cleaner to suck all of the dust and debris out of the attic. Finally, use a mop and bucket to clean any areas that have been difficult to clean with a vacuum cleaner or broom.
