I cleaned my MAFs several times and it was VERY easy - if you can use a screwdriver and a spray can, you can do it. The MAFs are not particularly fragile - they can stand up to the environment under the hood - but you don't want to bang then around. Do not poke the cleaner straw into the MAF body; there is a thin wire that you could break if you make contact with it.
According to what I've read on this site, cleaning the TBs is a more complicated job but still pretty easy (see JARblue's comment above). There are several threads explaining the procedure.
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