I've used the 50/50 mix for a while now and it has been great (thanks Cayugad!!).

In order to have pre-moistened patches on hand, I like to do the following: I use a small round tupperware container large enough to hold 2 1/4" patches. I put those in there and just enough 50/50 to moisten the patcheswith a little left over to cover evaporation. The leak proof container keeps the stuff from leaking and evaporating. And it makes quick cleaning at the range very easy. Actually it makes cleaning at home easy to!

~Robert