And, for bonus points, how are they made?
These seem like an awfully important test piece. I'm pretty sure they're just checking for glucose with some enzyme or something. But who knows, maybe its something simple or everyday? Are all brands using the same materials?
For the record - this is the argument against democracy. And it's not so bad!
Democracy can do horrific things! It is prone to mistakes with things that can be fear-mongered, where there's a lot of money invested in grifting, and when the real reasons are sufficiently complicated that they don't fit on signs (or nobody is interested in doing the work to put them on signs).