I emailed Knix about PFAS. What I got back was polished, reassuring, and carefully constructed to tell me almost nothing useful. What it did not mention was the $1.4 million federal class action settlement Knix entered into over the exact leakproof products I asked about — or the court-ordered requirement to stop calling those products PFAS-free. Here's what their email left out, and what every consumer should know before buying from brands like this.