My Shark filters have been smelly for quite some time. I've tried improving her smell with essential oils, but even regular washing didn't help. So, out of desperation, I ordered this set. I'm so glad I did. My vacuum cleaner smells fresh, clean and works better than ever. The filters have increased the suction power of the vacuum cleaner and it picks up more pet hair than with old dirty filters. Changing the new filters was easy. This is excellent value for money and if I now have problems with my vacuum I will order this replacement set.