You might not notice how bad your vehicle smells from cigarette/cigar smoke, stinky pets, gym socks, rancid food and other gross sources. But those riding with you probably will, which is why the Moso Bag is worth considering. The manufacturer claims that within 24 hours the product will absorb smells and freshen the air using only pure bamboo charcoal. Apparently the non-toxic pores in this material are what does the trick. The manufacturer claims the product is better than sprays and little trees hanging from your rearview mirror that only serve to overpower odor with more odor. Each Moso bag is claimed to last up to two years. After that, the ingredients can be spread in your garden to enrich the soil. There are a variety of sizes starting at $10 from www.mosonatural.com.