If you guys are using evaporating cleaners such as Gun Scrubber, I strongly recommend you wear chemical resistant gloves. As already mentioned, many chemicals are eaily absorbed into the skin. I started wearing gloves after my hands started tingling after cleaning my guns. I use Gun Scrubber to blast out the Hoppes 9. Better safe than sorry!
While we are on the topic of safety, I strongly advise wearing safety glasses when cleaning your gun with something such as Gun Scrubber. I had that stuff splash back in my eye and it hurt like heck!
The ATF should be a convenience store instead of a government agency!