I always use denatured alcohol to mix with the whiting. Be aware that wood with large pores will have white spots where the whiting gets down in the pores. You'll have to sand to get this out but be careful not to sand your wood around the stock head too much. You don't want the wood below the metal. This is why I usually just put the stock bare under the light, then brush everyday or so with alcohol to remove the oil thats on the surface. You could use more aggressive solvents, but I've seen them turn the wood gray. Take your time and get all the oil out.
