I have never used a bait pump so I don't know all the details, however; from reading the closed thread on bait pumps I ordered one yesterday. While I am waiting for it to arrive I figured I'd try some alternate ideas expressed in the bait pump thread. Bought a small needle (doesn't have a needle) type pump. Only cost .39 cents at Tractor Supply. Thought maybe the opening where the paste comes out, might be a bit too small. Made a stop at Walmart and went to the pharmacy. They had something similar which the women just gave me a couple free of charge. She said if they don't work, just throw them away. Free (must have been my charming personality) Still thinking the end where the nuggets comes out to be too small, I decided to try "Smelly Jelly" which I have had in the garage refrigerator a couple years. Waited over night for the jelly to soften up and then put it in the tube. I think thinner than the nuggets, it worked like a charm. I bought the smelly jelly mail order and never used it because it was messy and I didn't want it all over the boat. Putting it in the small pump type needle keeps it mess free, so I will be trying it. I am storing the full needle type pump in a zip lock bag in the refrigerator. Because the Smelly Jelly solidifies in the fridge I will take it out the night before I go fishing, Pop