Knitting advice needed

I have a question for all my knitting gurus from a friend. She has a very tiny baby beanie that was her husbands when he was born. He was premmie, so it is very tiny. It is knitted (we presume real wool - we are talking 35 years ago here), and it has a little pom pom on top. It is a little grubby and she wants to wash it and make it all nice again as a surprise for her hubby. It has a couple of small holes in it - probably age or maybe moth damage, so she really wants to ensure it isn't damaged any more than it is.

Obviously it has huge sentimental value and she is worried about ruining it. Does anyone know the best way to clean it? Are there any products on the market that might be good to use? What about woolwash? Any suggestions would be greatly appreciated.

P.S. I have decided to put a time limit on the mini poll - to 29th July. So get your votes in. Currently it is 9:4 in favor of Oscar getting his blog. He is watching daily and makes excited laps around the furniture when he gets a YES. When he gets a NO, he sits in the corner washing his fur. It is quite sad really.