I have 2 cavities that have been quoted to cost $7000 to repair. I follow Dr Ellies routine to the letter, most of the time. When I stray, usually with a sweet treat or glass of tea in the Resting time. I can feel the pain start to creep up. An extra Zellies mint or 2 (swishing around for a few) and the pain leaves. I can't say enough for this product and the knowledge Dr Ellie has provided.