John,

I didn't respond, 'cause I'm just not SURE.

Live rock, particularly, is very porous. I'd put it thru a BUNCH of fresh water changes AND time sitting in water. You can then re-introduce it and it will repopulate with bacteria, becoming "live" again. Dilution of the chemicals is key - and livestock will not tolerate much of it.

I remember in high school Bio II class, a friend of mine was working with an African plant that natives used to tip arrows/spears. He diluted it 400,000,000 to 1. It killed a goldfish in seconds.