These work great. Not only is my air cleaner but they add a bit of water. The most is super fine so there is no mess and I can put them anywhere, on carpet, counters or a table. I refill once every two days. The best part no expensive filters.
EVEN IF WE DON'T HAVE PETS, I ALWAYS ORDER THE FILTER C. I HAVE AN AIR PURIFIER FOR MY MOM AND IT IS ON 24/7, EVER SINCE I BOUGHT IT HER HEALTH IS MUCH BETTER SO I CHANGE THIS FILTER AS SOON AS THE LIGHTS INDICATES A CHANGE
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