Sheep News: Be Careful with Dipping Sheep

Today I read some environmental sheep news in the Lakeland Today:
Farmers in Cumbria have been urged to take extra care with sheep dipping as part of a new initiative to protect the native white-clawed crayfish in the region.

Every time a read about sheep dipping I am not thinking about desinfecting sheep, but I see the Gary Larson cartoon (I posted earlier) before my eyes.
I just can't help it.