Gargling with salt water is good for a sore throat. But this stuff, a sort of slimy brine in a packet, is no more convenient, no more effective, and definitely more unpleasant than just dumping some salt in a glass of warm water and stirring it with your finger. You need to remember to carry it with you (you can always carry some salt packets from the deli). You still need some place to spit it out. You will definitely want to rinse your mouth out to get rid of the taste. Bad idea. Bad execution.