On epicureanhermit there is an article on dairy products. It is totally true. Dairy is safe for crabs to eat. I have given my crabs cheese ever since I got them (2-3 months) and I have had no side effects. THEY LOVE CHEESE! Especially cheddar and swiss!
Yeah, me too. That artically is actually fairly old-ish. I remember when "so-and-so" did a trial on it. It was really neat on milk).