I fixed Joycon drift with contact cleaner

[Guinea]

After ~2 years of the Switch's life, a problem becomes more and more prominent, which is commonly referred to as "Joycon Drift". For those who have not heard of it yet, it basically means that your Joycon's joystick (especially the left one, as it's used more) starts to "drift" into a random direction without input, which can cost you a life, or some nerves when navigating menus, or both. So the issue has popped up for me too, both of my left joycons were affected.

Apparently Nintendo's customer support has now admitted that this is Nintendo's fault and they will repair Joycons for free. However, if you have only one set of Joycons, or you don't live in a place where you can take advantage of this free repair, I have tried something that I can confirm worked for me:

Just put WD40 electronic contact cleaner in there (not the regular WD40! Only do this at your own risk, obviously).

I have done this to one of my Joycons and the drift was completely gone, as the article described. The second one is currently drying

Hope this was useful to somebody here.

UP: second joycon is done drying and the calibration menu shows 0 drift now