I bought some pots scrubbers that I was sure were solid copper.NOT!!
after my run there was particles of black crud..turned out to be rust as well as the disintigrated scrubbie..When I took it out of the column it was fragmented and thin like hair..Real disgusting....BE WARNED
You really got to read the fine print - lot of bad ones around, especially now with copper prices so high.
I had the same problem with the first batch I used, then found one of the wrappers they had come in, and noticed they were "Kopper". And our hardware store has "Copper-Coat"!