We love the BaitPump and they are practically indistructable but I did let mine roll off the edge of my boat onto the floor and it broke a piece off of the tip. The tip has to be so small to get inside of the tube jigs. It still works just not as neatly as before.
Like Sac said the Crappie Nibbles will stay as fresh in the BaitPump as they do in the jar. I usually just push the dry out of the stem and put it back in the pump to mix with the fresh.