Be careful when you buy an Ozone machine I see many people buying one that is way to big by that I mean the output,
No more than 1gm per hour, I have one in our office it's only 500 milligrams it does the job,
You will see people say they are dangerous yes they can be but that is because it's to big, I saw one woman buy 11 gm I could run my swimming pool on that,
If you need advise on which one to buy post the link,
My husband is an expert in Ozone technology.
Bye the way you will not find local shop selling them usually online Amazon have a big range of them,