Our expert says:
Hi Chris - aplogies for my later reply. I have been away and the notification to say so was not put on the forum.
Dust mites eat tiny little pieces of organic matter. They cause allergies in susceptible people, but not bites.
Bed bugs feed on blood, and they certainly can cause visible bites. There are pics of bed bug bites here: http://www.health24.com/tools/galleria/default.asp?gid=2
Also see my article: http://www.health24.com/medical/Condition_centres/777-792-1461-2504,34035.asp
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