I'd suggest using Finquel instead of clove oil, if you can find it. I had to snoop around and finally found it on some pond fish site. Clove oil is linked to brain damage in those guys, it's not really good for them

When cutting their teeth, you keep them fully submerged until they're completely unconscious, at which point it'd be ok to take them out for a few seconds to trim, but no longer than a few seconds, you don't want their skin drying out or them to suffocate. Then back into a small container of freshwater until they're fully awake, then you release them back into the tank.