Wet Cleaning a sensor
what exactly is "wet cleaning"a sensor...please, and can I do it?
This should be posted in the forum devoted to your camera. Or, in "Open Talk." Or in "Beginner's Questions."
You'll likely find more helpful responses there. . . this forum is devoted to the DP challenges and related subjects.
But a short answer to your question: It is (I believe) using a solution (ie, "wet") to clean the sensor, along with a perfectly clean swab. Yes, you can do it. *Should* you do it? That is up to you . . . the process is not terribly difficult, but it also is not without risk--especially if you are are unfamiliar with the cleaning process. Maybe take the camera in to have it professionally done (will almost always be less than $25 USD), and ask to watch it being done the first time? This will give you first-hand exposure to the process, and you can then decide if it's something you want to take on yourself.
Given the fact that the OP can't correctly determine the correct/best forum to post his question in, the latter part of your reply may be his best choice.
/A veteran is someone who, at one point in their life, wrote a blank check made payable to their country for an amount of "up to and including my life"./
(...from the generation that still uses capital letters and punctuation...)
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