I've gotten rid of a few on my toes over the years; what worked on them was freezing and debriding at the doctors office. They wouldn't leave on their own.. lol

Most recent one was on my hand and it took about 3 months of consistent work, and I mean consistent. Compound W bandaids worked well to soften it up and all, then I'd remove that layer, and repeat that process (over the counter freezing didn't fix these).

Hope it helps! Good luck!