I agree with Scott yet Comp Cams actually states do not clean springs with evaporative solvents (I did check their website btw).
They believe from their site that factory applied rust preventative coatings can be removed by some solvents. True as that may be, if one uses spirits, I don't see how this product could remove any coatings. Heck, on street rebuilds (fast and cheap!) we used to use virtually anything, gas, turpentine, brake cleaner, etc. to remove heavy crud but were careful after cleaning to WD-40 them to prevent rust from forming w/o any issues. Then, dumped them into a coffee can with oil before reinstalling.