Silly question I guess.. I am in New Zealand and no LFS anywhere near me sells cleaning crew animals. I wouldn't mind having at the least a few small hermit crabs. Now 100 meters from my house are pristine tide pools on a remote beach, there are 100's of little hermit crabs in there. I doubt I could use a couple of these? I am not sure how different my tank would be for them and also I would be worried about spreading of disease or foreign bacteria. It's just a thought and interested in views or if anyone has done such a thing..