hmmm... don't have much in my fuge 'standard cleaner'-wise like i do for my main tank. for me its dangerous to have alot of snails, especially bigger ones as they may clog up a smaller pump depending on how your fuge is setup.
most fuges i see are just live sand and/or small pile of live rock rubble and some macro (cheato seems preferred, though calupera, etc. works but danger of going sexual) and/or a xenia fuge. not much in terms of 'standard' cleaners (crabs, snails, etc.).. let the micro critters do their thing..