DD had a verruca for about 3 months and a wart for about 3 weeks. At night I put cotton wool soaked in apple cider vinegar (from Holland and Barrett) on it. I covered it in duct tape. I then used used micro pore tape to hold it all in place. After 3 weeks with about 4 nights in that period of not doing anything verruca and wart gone.
These were her only verruca and wart. Prior to above method didn't try anything else,