I actually live in Japan, and know the president of the company that manufactures the Eco Bio-Block, as well as the president of the distributer in Japan and Asia too.
It isn't just pumice and snake oil...as some have been saying but is made from natto and concrete. The company that make this has patent in several coutries, and already supplies local governments in Japan, Malaysia and India for use in public waterways...if it was Snake oil, then surely these people would have noticed when testing???
Natto for those of you who don't know, is primarily a food stuff in Japan made from fermented Soya Beans. Eco Bio-Block uses several varieties of these fermented soya beans to produce the overall effects shown when using the product.
I represent Eco Bio-Block in Europe, we are currently looking for agents for sale of Eco-Bio Block in all of Europe apart from Scandanavia, (Denmark, Sweden, Norway and Finland), where I already have agents.
If you have any questions about the block, please feel free to contact me at paul at koibito-japan.com I have an information .pdf that I would be more than willing to send to anyone who is interested...
I will try to be as unbiased as possible when helping with your questions...
Here is link to a supplier in Japan (Sales in Japan only) -->
http://www.ecobio-block.com/
Here is a link to the manufacturer Koyoh --->
http://koyoh.jp/
Regards,
Paul.