I was very happy to find these filters at this price compared to the manufacturer but they are not worth it. I thought I would buy the year's supply but I broke two of these in a month of use. The filters don't quite fit perfectly - they're big, so I really have to force them in and out of the bin on my Neato. This makes emptying the bin a HUGE pain as you mostly end up throwing dust and pet hair all over the place. Then the clip snaps into place, which you press (lightly) to open the bin! I figured it was an accident on the first filter and blamed it on forcing it. The second filter is ALSO stuck and I accidentally broke it this morning. I'll use up these filters, but in the next round I'll pay full price and go back to Neato. Let's see if these 12 packs last six months. For reference, the two branded filters that came with my vacuum lasted me about nine months.