I found this on the forum this morning:
"The dirt pieces are Bonus Objects, worth 5 points each in the dirt trap, and 3 points each everywhere else on the table.
If the dirt does not make it into the trap, they are only worth 3 points. Unless they are in the ref's pocket when they are worth 0 points.
Having the dirt get stuck in the net is not a limitation of the model like the release mechanism of the atomic motor. It is fully expected that some dirt will be bounce in wild directions or get stuck in the net. Now is the time for your team to brainstorm a solution to this interesting problem."