Originally Posted by
Boggie Dog
The swabs may collect things well but the problem is those things in most cases are not dangerous, like Clear Care contact lens cleaner, my camera bag, and other such things.
TSA seems to have a habit of deploying systems that offer little security benefit.
The bottle may say on it that it contains a product, but there is no way to be sure that those contents have not been replaced with something dangerous without testing it. Its something ETD systems are particularly good at.