Yes have been on it for about 12 years and it works great, I also use Symbacot with it.

Really expensive it you require the best

It's a machine that they claim "revitalizes and energizes" the air in your home. I didn't look to see what they cost, but they're probably not inexpensive.

I did a quick google search for Spirovital Therapy and could find nothing in the usual medical journals about it. There's a lot of information provided by the company, but the evidence is anecdotal, not scientific. That said, the company appears to have a good business going and people do use their products. Whether there's any real benefit in scientific terms is questionable, but if you like the product and feel it's helpful, there seems to be no reason to think it could harm you.

What does the treatment consist of?