Sorry about the chew-toy implication. My experience is different than yours. Though I have chewed on a few of these in my time also. <br><br>Bic makes a couple of stick pens. The ones I am referring to are the Bic Round Stick pens. These have a somewhat larger diameter barrel, blue plugs in the end and a blue collar on the business end holding the ink. The pens which have a larger white cap on the end which stands up off the end of the pen are a different make and indeed do leak - they are also too small in internal diameter to hold PA tablets.<br><br>Also, I get mine fresher if that makes a difference. They are manufactured in CT and I live in NH so they don't travel far before I get them. Dont know if the \handling in travel would affect them though I doubt it would.