Review on PINK RHINO LABS Bamboo Charcoal Air Purifying Bag Odor Eliminator for Home and Car - Kid and Pet Friendly Fresheners and Odor Absorber - Activated Bamboo Charcoal 8x200g by James Richardson

These aren't magic bullets - if you have something in the room that gives off a persistent odor (old mattress, furniture, carpets, etc.) then you need to throw this item away, to solve your problem, because while they're great for temporary odors without an intense permanent source, there's not much they can do. After leaving some of them indoors for a day, I can say that the air is in a neutral state with no odor and appears fresher overall. This is an easy investment in creating a fresher smell in your home.