Review on Concise Home ozone generator & air purifier - 5000mg commercial air by Jessica Thomas

This device produces a lot of ozone. I have used it to eliminate cigarette and pet odors and it has paid for itself many times. The timer is a great feature. A one hour treatment is suitable for most vehicles, strong odors will require multiple treatments. It helps to turn on the air conditioner during treatment in recirculation mode. I've found it only takes 20 minutes at a time for small spaces. After stopping the timer, keep the room closed until the ozone in it slowly decreases.