Works EXCELLENT!. I think I'll buy another set for the future. I always clean the ones that come with my vacuum every 3 months as needed, but I think they should be replaced from time to time. My vacuum's suction power was three times higher after I installed new ones and I found the old ones took on an odor that I no longer have. I think that in addition to the mandatory cleaning every 3 months, I will replace the filters every year because the price was reasonable in relation to the benefit.