My HEPA (Eureka Clean Stream) handheld vacuum was in dire need of a new filter. Whilst they can be gently washed, it is very difficult to keep dirty water inside and when it flows from the outside in you somewhat negate the importance of the filter. Like most of us, I sometimes just clean up the dirt, but most of the time I just throw out the trash can. I took these two packs because I knew they would fit and the price was competitive. I washed out the whole dirt container and disposed of the old dirt filter. When I was done it looked almost new. Smells a little better at work and the suction power remains great. I even bought some new belts to make sure Murphy's law of self-service was upheld. I definitely recommend these filters if they match your vacuum and if you can't remember the last time you changed it you probably should. A word of advice, look inside the filter and see if there's dirt there, then it's time to clean the parts and put in a new filter. Mild soap and water, rinse plastic well and allow to dry slightly, fit new filter. And with this set you already have a spare. I will buy again if the vacuum doesn't die.