Eliminating smoke residue, mold, mildew, bacteria, and pet odors is key to improving indoor air quality. With the Air-ReNu paint additive, you can transform walls into air purifier systems. The paint’s innovative air ionization technology interacts with the odor-bearing molecules in the air and eliminates them in the process. The initial cost is the only cost you bear. Without any electricity, filter, or servicing, a single application of the treatment will remain effective for 10 to 12 years.