Don’t use alcohol, at best you might dislodge some of the dust, but within 1-10 days the issue will return unless you clean it super thoroughly. The best way to deal with it is electronic contact cleaner. Use a swab to dig around for a minute or three (might need to spray in a bit more every 30 seconds or so), rotate the joystick, swab a bit more, rotate and it’ll dry in a few minutes. after 1-3 treatments (depending on how much crap is in there, mostly it will be just 1 required) the issue will be repaired. I’ve fixed about a dozen controllers of family, co-workers, and friends this way and have had a 100% success rate with only my kid’s controller drifting again after like 6 months (which I fixed again).
I describe myself as a little dose of toxic masculinity.
