Style "MM" Filteraire 3-Pack For Eureka Mighty Mite 3670, 3680 SeriesStyle "MM" Filteraire Filteraire bags retain up to 99% of pollens, 98% of selected bacteria and 95% of all yeast and fungi that would normally be put back into the air in you home after vacuuming with standard dust bags. Filteraire bags trap 5 times more of these particles than standard bags.