Just recently, my 8 yrs old had a sore red throat, and despite the yucky taste of Thyme, he knew it would make his throat feel better. He gargled every 2 or so hrs for two days (minus sleeping time). In between he sometimes sucked on an On Guard protecting throat drop. He's feeling much better!
Side note, I had FCO on hand to put on his lips afterward to help tone down the taste and sometimes his lips were sensitive to the oil.