corrosion in fuse box

[Lady Benz]

I Recently found out that a little (or a lot of) corrosion in the fuse box can cause some really hard to find electrical problems (hard for me to find that is) such as glow plug lights not coming on and head light not working as well as the horn.

I found in search where someone posted that they turn the fuse to make sure that there is a good connection and they also use a rag with WD 40 on it to wipe the connectors that the fuses sit in.

My question is do you use the WD 40 to clean the connectors when there is already a good bit of corrosion or is there another product to use? I was thinking of alcohol since it evaporates quickly.

Thanks! Cendy