Soothes Pain, Fights Infection Topical solution and concentrate for gargle Relief of Sore Throat symptoms including those associated with Colds and Flu Simply gargle twice a day with TCP diluted with 5 parts water. DO NOT SWALLOW Mouth Ulcers – To ease the discomfort of common mouth ulcers, dab undiluted three times a day. Should symptoms persist for more than 14 days, consult your doctor or dentist. Cuts, Grazes, Bites, Stings – Dilute with an equal quantity of water and apply freely. In emergencies may be used undiluted. Boils, Spots, Pimples – Dab lightly, undiluted, every 4 hours and do not cover.