I think the best way to get it removed is to go to the doctor. There they will most probably tie a string very tightly around the bottom of the wart, freeze the wart, and then you go on to doing what ever until the wart falls off. I think it takes like a week or so to fall off, not sure. Hope I helped some.
I had one before in my foot too. I went to a terminologist (Experts of skin care). They removed it using freezing and some medicine that I kept using. It did hurt a bit, but it took only weeks to remove. However, all warts are different, so you might have different one than mine that may requires less or more work to remove. I still recommend a doctor (Insurance cover this in United States by the way if money was the issue). And also, do not wait until they multiple in your foot, they would really make it more painful and hard to remove. I say you do it as soon as possible.
PS: Some people on this topic recommended some things too, try those too if a doctor is a really hard choice for you.