I'm a bit confused as well, because I've spent well into 6 figures on the site since the beginning days of Amazon, and I've literally never noticed a counterfeit product. So if this is a super common problem, they are some quality counterfeiters.
The things which really get my goat are the awful-quality print-on-demand facsimiles I sometimes accidentally buy when I'm looking for an old book. Seriously putting me off Amazon. Nationalise and break them up already!
I use this stuff for my fishtank that conditions the water. It is primarily for removing chlorine. So I got a bottle off of amazon. A few months later I am at the pet store and they carry the same stuff. I notice the bottle in the pet store has the label printed directly on the bottle. The one I got from Amazon was what looked like the same label but was just a sticker.
So I buy the one at the pet store and a water test kit. I test both bottles and the one from amazon did the same to remove the chlorine as just letting water sit out did. While the one from the pet store did what I was expecting.
