The Bazuka gel leaves a protective film over it, so you don't need to cover it. My DD was covered in warts, filiform warts on her face (especially big one under her eye), on her hands, arms and even a couple on her leg.
Bazuka didn't work, Salactol didn't work, thuja pills didn't work, dandelion stem juice didn't work, ditto vinegar and banana peel.
GP was going to see if she could be prescribed ranitdine or something like that, as couldn't use anything on the face.
We bought the freezing stuff. It worked on the one under her eye (yep it's fine for the face), and most of the others, except some on the hands...they went shortly after.
I never got anything from her (or my son), but randomly got one on my finger recently, which is large and spread to below the nail.
Been using Bazuka on it...it dried up, I picked it off and it's now there again, so going to have to get some freezing stuff.