If the shells are thin (like the whales eye) then boiling them could cause some damage to them because they are so thin (just a guess, not for sure). But the thicker ones like the turbo's would probably be fine.
I've never boiled any of mine. I always just run hot water over them and brush what I can get too. Not a problem with it yet.
I've never boiled any of mine. I always just run hot water over them and brush what I can get too. Not a problem with it yet.