i have managed to get most of mine out, but have one that is just giving me fits. his base is deep in a really porouse piece of live rock, around like three corners. when retracted it's impossible to even tell where the base is at and he sure dosn't stay out when i start coming at him with the slurry of death. at this point i would be willing to do anything to get rid of it even if i means killing the whole rock but would rather not if anyone has an idea. could i poison some food then feed it to him?