I'm having trouble picturing this. I think you mean you built a box
to hold the straw, right?

Sorry I wasn't clear. The mold is in the straw. Its full of it

the cage
http://members.aol.com/kkfromnj/cage.jpg/

and if you can see it, the mold
http://members.aol.com/kkfromnj/mold.jpg/