First, in general, there are so many apparent reviews
of so many products, it is hard to believe they are all scams. How can there be enough
fools to buy enough of those products to have that many different ones?
I see you're new to the intersection of the audiophile world and online selling :P
Pretty much all of that stuff is "dubious at best" nonsense. We used to get
print magazines/catalogs for that junk at ITI Audio/Sontec.
Demagnetizing CDs and DVDs is up there with the special offbrand Sharpie marker for
coloring the edges of the disc to reduce...whatever it didn't actually reduce.
Thanks,
Jonathan