Dyson's new vacuums don't require that you clean the filter
 

Sure, your vacuum cleaner might not need a bag anymore, but you're probably still cleaning or replacing its filter every now and then to make sure you're sucking up as much dirt as possible. You shouldn't have to if Dyson's new Cinetic Science vacuum...

http://www.engadget.com/2015/01/08/d...=rss_truncated