You have to be skeptical or else you will be a sucker! Surely they tought you this during your science degree?
We have started to descend to personal abuse. As expected though.
I thought any claim has to be proven if it is to be considered seriously and promoted to fact status.
If medical company says "a drug has no known side effects" without even testing it they will be in jail.
If you pass personal opinion as fact then say so. I have no idea if these things work or not but some companies offer full money back no questions asked if you are not happy:
http://www.eddy.uk.com/index.htmCharlatans don't normally do that. Please note that their claim is not that this thingy reduces water hardness - it does not, but it reduces scale formation on pipe and other surfaces.
I have no idea about these devices and I have never used one. And I have no claims to make.
But if somebody here would claim they work I'd ask for proof just as well as I ask someone who claims they don't.
So far I have seen only david77 saying they have one and it looks like it reduced scale formation. This is inconclusive but fair.