Correct, two clamps to undo and disconnect the sensor wires. Then there is a mesh thingy held in by a circlip. Carefully lever the circlip out, remove mesh and wash away. Make sure its all dry before you reinstall.
I give mine a squirt every time I do the oil, only takes 5 minutes and does make a difference. If you do it regularly you won't notice much, but if you go from very dirty to clean you'll notice it, doing it regularly keeps it top notch all the time.
I've tried the specialised MAF cleaner, I'm convinced its just rebadged electrical contact cleaner sold for twice the price - smells the same, looks the same, evaporates the same. So contact cleaner for me, never tried carby cleaner.
ide be very cautious about using carby cleaner as it melts plastic and just about anything else due to the toulene in it and im sure buying the proper cleaner is cheaper than a MAF sensor when you melt something important inside it.
yeah, i woulda used contact cleaner but i was out and hadn't brought any new cans yet so carb cleaner it was. having said that, i spray'd it straight through the MAF so very little actually acumulates inside the MAF sensor area.
i'd certainly suggest it should be part of a regular maint shedule. i wonder if Holden do it when they service cars?