Before I go on, I think I've already decided to weed out my distress inks. I don't use them, which would be the best reason to do so.
The question that I originally wanted to post was about the shelf life of these specific inks. Mine are at least three years old and older. Common sense tells me to try stamping with them to see if they still work. Common sense might prevail. Until then, how long is the shelf life for YOUR ink pads?