PowAir Blok is the best solution for maintaining a neutral odor in rooms that are quite problematic and exposed to unpleasant odors. PowAir blocks are perfect for storing in the vicinity of the cat litter box and litter bin or other containers or places where the smell leaves much to be desired. It is successfully used to neutralize odors in humid places where containers for storing things are placed, because it effectively eliminates the unpleasant smell of musty and damp. Most importantly - PowAir Blok does not only mask unwanted odors, but acts at their source, effectively absorbing them from surfaces, materials and air. Using the blocks is extremely simple, just open the lid and expose to air.