If you want to do it yourself, there are several nonprescription products to try.
Most contain salicylic acid
and work by slowly 'eating away' the wart. Also freeze-type products that you can buy. Warts
on the feet can be treated with the above or a salicylic acid plaster that is applied and left in place, sometimes for 1-7 days. If those don't work there are treatments by derms/other docs.