I am the atty killer- doesn't seem to matter if I clean them, dry burn them or boil them.
I have limited success with using a sonic cleaner after a soak in PGA and in the sonic cleaner either with PGA (or if I run out, white vinegar). I had a pile of 20 or so attys tonight (about a month's worth of bad attys for me)- I go through about 6ml of juice a day. I also run warm water though them all about once every 3-4 days. Tonight, I ohmed them all...usually the ones that don't ohm at all are dead and I just toss them. Sometimes those that are starting to increase in ohms, by cleaning and then dry burning will bring the ohms down to a usable level, but not usually. I tend to use LR 510 attys and vaping on them with VG juice (like I do) is just hard on them. I'm waiting for a good rebuildable atty to use with my Reos. So, after tonight I have about 12 or so that are still working after cleaning 20- that ain't too bad. I separate them out and those that ohm at 2.4 or so to 3.5 (even though they started as either LR or regular (2.3ohm) attys) I use on my variable volt Reo at higher voltage- they don't last but a day or so usually, but I can still get a little life out of them. Those that ohm correctly after cleaning could last me a week or even a month- just depends. Seems quality control is just poor on especially LR attys. I like EM LR attys (cause they're cheap and vape good! and it doesn't kill me when I kill one) and Joye regular resistant attys for my VV Reo.