Wilbur Slice wrote:

The only think I didn't like about their rock was - it had some Mantis
Shrimps and some hairy crabs hitching a ride, and those suckers were
hard to catch.

The Foster & Smith web site had some advice about this. They said to dump your
rock into a bucket of salt water with an SG of 1.035 to 1.040 for one minute.
They claim that all of the worms, shrimp, and crabs will bail out of the rock.
You can then move the rock to your tank or curing bin and pick through the
bucket to see if there's anything in there you want to keep.

I've not tried this, but I intend to when my next order arrives.

George Patterson
All successes in conservation are temporary. All defeats are permanent.