【GREAT VALUE PACK】Each value pack provides 2 pieces of Ultra-Carbon tags, it provides more absorbency than standard charcoal bags. 【EASY TO USE】Each Tag has 2 double sided adhesive tape, just peel and place at inside wall of any pet house or the wall near the pet areas. 【CHEMICAL & FRAGRANCE FREE】We use natural material, Unscented, it’s SAFER than other chemical products. It’s RECYCLABLE without WASTE. 【ODOR ELIMINATOR】The Ultra-Carbon tags has a larger micro porous capacity, which means it has a stronger adsorption capacity, Eliminates Odor faster and longer. 【REMOVES CAT&DOG BAD SMELL AT HOME】Ultra-Carbon Air Purifying tags is top graded Carbon fabric, it 100 times more porous than regular charcoal, its LONG LASTING, UNSCENTED, SAFE. Will make sure the air at home to be PURIFIED and DEODORIZED.