It is difficult to write a review. I live in a house with my fiancé and dog and have very severe allergies. I decided to spend some extra money and buy a filter that sounded like it would help me with my allergies. I put the filter in and to be honest I couldn't find anything. I can't give the product a bad review as it's hard for me to say if it does what it's supposed to do or not. One of those things that isn't easy to measure. I can honestly say I don't know if I'll spend the extra money to buy them again or not.
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