My 40 breeder was loaded with these before I upgrade/moved most livestock to my 95. Knock on wood, but I believe my tank is clear of these little buggers now. Here's what I did...
During move I put all coral and rock into temp holding tank that I then dosed with FW exit. I then gave each piece a good rinse in a bucket of old sw and then put them in my new 95g. I did not have any of my fish in the temp holding tank, so there was no worries about toxins affecting them and therefore no need for me to run carbon either.
After I was done I could still see some fw's on the pieces I put in my new tank, however I never dosed the new tank. I believe my leopard wrasse may possibly have picked off the remainder of then, or maybe they just died off naturally??
So I guess your solution is... upgrade to a bigger tank! ;-P