Warheads Double Drops Liquid is another product from the Warheads brand known for its intense sour flavor. It typically comes in a small bottle containing sour liquid candy that can be applied directly onto the tongue for an extreme sour sensation. The double drops refer to the dual-flavor combinations available in some variations of the product, providing an extra layer of taste experience. These liquid candies are often favored by those who enjoy intense sour flavors and are looking for a unique candy experience.