I picked a pack up of these yesterday just for the fun of it.  They're kind of pricey, $4 for a pack of 6 ($0.67 a piece).  I fish just about any soft plastic at that price.

I did have a little fun though with these things.  I took one out of the pack and 3 out of an old pack of Zoom tubes and  I let our cat have at it.  Believe it or not, the only one she played with and attacked was the coffee tube.  Also, I hate to say it, but the smell of the coffee tubes made hungry and thirsty for some coffee.  I don't know if these work any different than the rest but they sure do smell better than Venom or Gambler. ;D

I bought several packs of the coffee tubes from BPS, can't wait to try them this spring.

They have been getting quite a bit of publicity lately, the bait monkey says I need to invest in a couple of these......

I guess you could say they are pretty popular.  I went to a local bait shop today and they had two cases full yesterday.  They only had 3 packs left today.  The owner said it was the hottest selling item in the store this year.