Traditionally, Colt's and S&W's were cleaned by simply opening the cylinder and cleaning the bore and chambers.
Unless you drop it in a mud puddle or use it under extremely harsh conditions like dust storms, or in salt water they usually don't need more.
If you are concerned about it, you can do a full disassembly once a year and give it a full deep clean.
Before doing that I strongly recommend buying the Jerry Kuhnhausen Shop manual on your specific brand and buy some Brownell's Magna-Tip screwdriver bits to avoid dinking up the screws.
"Usually" the following bits will fit almost all Colt and S&W revolvers.........
.150-3
.180-3
.210-3.
The Shop Manuals were written to be used as training aids for new gunsmithing students. These cover all disassembly adjustments, and repairs to FACTORY standards.
BEWARE of disassembly videos on Youtube. Some of those are by butchers who have no idea of the proper way to disassemble and reassemble without damaging the gun.
https://www.brownells.com/search/index.htm?k=shop+manual&ksubmit=y
https://www.brownells.com/gunsmith-...-bits/magna-tip-super-set-bits-prod41568.aspx
I also recommend a Brownell's "law enforcement" size handle. Standard size handles are too big. A "LE" handle puts you closer to the screw for better control.....
https://www.brownells.com/gunsmith-...ip-super-set-screwdriver-handles-prod400.aspx
If you're going to be working with guns much, buy a magnetic and a clip-tip handle, you'll have need of both.