On Oct 14, 2023, at 15:11, Jared Cabot via groups.io <jaredcabot@...> wrote:

?I have found that Dawn (or equivalent) dish soap and warm water takes of most of the nicotine and smoke gunk from hard surfaces.
I also run stuff, like circuit boards, rubber buttons, plastics etc through the dishwasher when the wife isn't looking.

Isopropyl alcohol can work ok too, but I found the dish soap works wonders more often than not.

I had a TDS500/600 something scope that I had to actually use gloves when I unpacked it, it was so bad (like the Tek blue case was coated in thick brown sticky residue and that nicotine stained dust was throughout the instrument) and it came up 95% stink free with a good scrub of larger parts and the dishwasher for smaller and complex shaped parts and PCB's.
After an airing out for a week or so, it is almost undetectable.

Rubber and soft plastics are harder to get stink free, but after a good cleaning, they tend to slowly outgass their funk and eventually get pretty undetectable.

I am currently restoring a Korg guitar synth for a friend that is stinky too and the Dawn dish soap has the soap bubbles literally brown it was that effective in ripping the nicotine and smoke gunk off.