Review on 🔍 8-Pack Neutop Replacement Filters for Roborock S6 MaxV, S6, S6 Pure, S5, S5 Max, S4 Max, S4, E5, E4, E20, E25, E35, C10, S50, Xiaomi, Mi Mijia, Xiaowa Robot Vacuums by Betsy Nash

This review is for a set of 8 filters. My wife randomly picked a defective one. Roborock S6 Pure kept saying "Error 9. Reinstall trash can and filter". After examining it carefully, I noticed that a piece of metal was missing, which I assumed was some kind of sensor on the device working. I compared it to the others in the box and the rest was metal. In fact, one seemed to have an extra one, and when I grabbed it I realized it was a small magnet. I pulled back the edge of the filter and was able to put the magnet where it belongs. So now it's working, but they have a quality control issue.