Review on Premium Matte Black ARB Certified Car Air Purifier with Dual USB Ports - Eliminate Allergens, Odor, and Harmful Substances - Effective Deodorizer and Ionizer by Ian Patilla

This was the third similar device I bought. The first 2 worked great, but they seem to "wear out" after a while. When I started using them I could tell a difference in the smell of smoke in my car within 12 hours. You could almost smell the ozone (if possible). On this 3rd I didn't see or feel any difference.