Oral malodor is a common complaint among dental patients. This condition derives in most cases form the putrefactive activities of oral microorganisms, primarily anaerobic Gram negative bacteria. These bacteria reside on various locations within the oral cavity (e.g. tongue dorsum, interdental space, periodontal pockets, faulty and leaky restorations and tonsils) and breakdown salivary and oral proteins into their amino acid building blocks. Some of these amino acids (e.g. methionine and cysteine) are further metabolized yielding malodorous volatile sulfide compounds (VSC) such as methylmercaptan and hydrogen sulfide.The tongue dorsum and especially its posterior portion are considered the key location for this process. Therefore, the treatment regiment includes in most cases a daily use of tongue scrapers and mouthwashes. Indeed, a recent Cochrane systematic review found tongue scrapers to have short-term efficacy in controlling halitosis.