I always order these filters. They're a bit pricey, but they keep the dog smell from seeping out when I vacuum. Maybe I have a bad filter? I get the stench before it dries up - long before I have to replace it. I also have expensive cloth bags and the smell still seeps through. Not happy with this filter like me. I will have my vacuum serviced/keep ordering these filters and maybe it's just my vacuum. But I was so happy with these filters before. I hope I'm not spending money on expensive filters - they don't do what they promise. I will consider the next order after I service my Miele. Hm!