Bazuka verruca gel extra strength contain ingredients that work together to break down and remove verrucas the term commonly used for a wart on the sole of the foot warts corns and calluses warts and verrucas are small excessive growths of skin caused by a particular virus the virus is highly infectious and warts and verrucas may grow and spread particularly if left untreated the virus can even be transferred from one person to another warts often occur on the fingers or on the bac