(via Are Your Warts, Moles Or Skin Tags Hurting Your Confidence?) Wartrol is clinically proven and uses FDA approved ingredients to remove common and plantar warts caused by HPV. Wartrol is a fast acting, painless liquid that comes in a convenient drop applicator. Warts are caused by the Human Papilloma Virus (HPV), which entered your body through tiny cuts, breaks or other vulnerable sites on the skin. These warts often develop pressure points and can be painful and unsightly.