Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Drinking purified charcoal
Review: I followed the instructions exactly. Every pitcher of water (about 20 so far) has pieces of charcoal/carbon in it, mostly gathered around the filter in the top filling tank, some black "dust" smeared around the lid, and a few chunks at the bottom of the pitcher itself and in my water glass! I'm taking them up on their warranty, getting my money back, and buying a different brand.
