Although more recent reports document that some alternative medicine practitioners use the Internet to market escharotics as purported "cures" for skin cancer,[3][6] they are not recommended as treatments for skin lesions or skin cancer by medical authorities. The effectiveness of escharotics is unproven, while safer and more effective conventional treatments exist for skin cancers, such as: cryotherapy; topical agents such as imiquimod, fluorouracil and Ingenol mebutate; radiation therapy; and surgical excision, including Mohs surgery[3] (microscopically controlled surgery used to remove and test cancerous tissue).