ACV does work for Molloscum Contagiosum, but its best if you can treat one lesion at a time otherwise it can hurt or burn your healthy skin, which becomes dry and irritated, then you scratch and cause them to spread. It will make your healthy skin look like road rash.
I have also read that you can put Vaseline on the areas that you don't want effected, not sure if this would cause all your band aids to come off Though, so it may not be practical.
Burning/freezing them off is not a good idea on a child because kids can't help but scratch and rub the blisters, this causes major spreading. Also if you still decide to try the Beatle juice, wash it off two hours after application, don't rub. I have taken my daughter several time to have this done and such bad blistering seemed unnecessary so I took her to another Dr. and he told me the shower trick. I tried it and it worked! The lesions died and she didn't have major blistering, just red where applied. My other Dr. Said to not wash it off for 24 hrs! What a difference it made.
Soak a small piece of cotton in the apple cider vinegar (just the kind you buy at grocery store)put directly over the lesion and cover with a bandaid. (Stock up on band aids cuz you will use a ton) Do this twice a day if possible. Best time to do this is right after a warm shower because the ACV will be able to penetrate easieR because the warts will be swollen.