I was reading a thread about boiling atomizers, and somebody suggested that it's the agitation that's important, not the water temperature which could actually be harmful. Somebody else somewhere mentioned Alka Selzer - so I thought, denture cleaner tablets! I tried it and it seemed to work fine. The attys (so far) are good as ever and it seemed to get rid of the residual taste and smell of the previous juice. I tossed in some carts too for that.
Interesting...
As a supplier, we get a ton of attys and batts sent back for RMA (!#!!**&! 30 day no questions exchange

) so they pile up for R&D.
We don't sell "refurbs" and I've had a great deal of fun doing everything from 34th floor flight testing to 18,000 RPM industrial jewelry cleaners. (I really do love my job - think MythBusters for 510 attys and batts)
My other posts have described everything from basic alcohol, cola and polydent baths to shaking them at high decibels until the cores fall out.
What I've found is that most soft-clean techniques will work, provided:
1) You limit the bath to under 5 minutes. Any longer and you can damage the adhesive, tach-weld or glue that holds the heating coil to the atomizer chamber.
2) You cleanse in distilled water. Alcohol as a last-bath will dry the components and (over time) dislodge the coil.
3) Let dry overnight or blow dry. Using right away will always leave some residual taste and you won't be happy. Even worse, you'll be inclined to think you did something wrong and repeat the process.
Currently, we have jars of 510 attys and batts, your suggestions are welcome and I will be happy to report the results.