Review on Munchkin True HEPA Air Filter Replacement For Air Purifier, 3 Pack by Sheneka Lane

I picked this up thinking that it was a small air purifier for the car / hotel while traveling. Upon receiving it I realized that it is a literally worthless product. Not only is it advertised as something to USE OUTSIDE; it literally flows like 10CFM which isn't enough to filter out a 35sq foot room in 30 minutes. therefore it literally filters nothing at any point in time that would make any difference to any air quality in a room.I unboxed this product and left it in a bathroom with the air quality meter; after 2 hours the meter barely showed it being any better. basically the same rate that the air quality would get better on its own.Therefore this product does nothing.They are basically selling "peace of mind" for people who have no understanding of science. To walk around with an air purifier that does nothing so they can THINK they are breathing cleaner air when it DOES NOTHING.You can never use an air purifier outside as even the best ones cannot do a single thing with the vast volume of air outside. However this one as said before cannot even filter a small bedroom in an entire day unless the whole room was 100% sealed.The worst offense is that this thing is also expensive for no reason and the battery life isn't even good. overall just avoid this and hope that they discontinue this instead of take advantage of people.