Doing ok Willy, hope you are too!
You CAN clean on the car but it's not as good as taking it off; if it's contaminated, then you need a lot of 'chemical' to clean and that will make the car very hard to start and run until it burns off.
So it's best to remove it . . . there's a large hose clamp that holds it in the 'rubber' base that mounts on top of the ETA. Loosen the clamp and the MAF will come out. However, if it's not been removed previously, it will be a bit difficult; use a small flat blade to work it loose.