Here is a HINT that I extend to people with less mechanical ability, lack of proper tools and/or lack of desire to either fully disassemble a Smith Revolver or pay a GS to do so.
If you start this when the gun is fairly new, it works just fine. It requires the use of a very very thin all in one cleaner, lube and rust preventative such as Rig #2 Oil or Remoil. Both are perfect for what I am about to suggest because they mostly evaporate relatively quickly leaving behind a protective layer and or are thin enough to migrate throughout the Revolvers mechanism. While this procedure is probably not as efficient as a complete breakdown of said Revolver, it sure beats the heck out of doing nothing!
The Rig#2 Oil or Remoil can be sprayed into the gun from the spaces of the Hammer, Trigger, Hand, under the Thumb Piece, etc. After doing so, operate the mechanism (with snap-caps) numerous times to get the product to coat all parts and then shake out. If you have clean-dry air from a can or compressor, blow the gun off gently and set aside for a day. Wipe off outside and inside of Chamber Charge Holes and you should be good to go for another year. NOTE: I would NOT do this procedure with a thicker oil or product since you are relying on the "thinness" of the Rig#2 and Remoil to let the excess flow back out through the cracks and crevices. You also want to spray and fill up the Ejector Rod opening in the Cylinder, work it a few times and dump onto a rag. Do this several times until the oil comes out clear.
The guys who I know with "two left thumbs" (not mechanical) or who have no desire for a complete teardown tell me this works fantastic! Again - do not use a chemical that is harmful when left on metal or other materials for any length of time. Not that I am a salesman for Rig #2 (I have NOTHING at all to do with the Company) but is it a great product and will cause NO harm to metal, wood, plastic or Polymers.
This procedure, while secondary to a PROPER teardown, works quite well and will keep your sealed revolver humming along.