oil pulling should definitely help yeast in the mouth, especially with some oregano oil in it.

I agree wholeheartedly with Trapper.

large number of in vitro, or “test tube” studies, have shown oregano oil, or its most active constituents carvacrol and thymol, to kill a broad range of bacteria and fungi. Conner and Beuchat tested 32 plant oils against 13 food-spoilage and industrial yeasts by the agar diffusion method. Growing yeasts were spread on special plates onto the center of which small (6 mm) discs dipped in one percent or 10 percent essential oil were placed. The “zone of inhibition,” wherein no yeasts grew, was measured after four days. Out of 32 oils, only garlic oil had a larger average zone of inhibition than oregano oil, and oregano had a larger zone of inhibition than garlic oil for four of 13 yeasts tested.4