I ABSOLUTELY LOVE THIS LITTLE CLEANER.!! For years now, I have gone broke buying "new retainers" costing anywhere from $125. up to $225. and THAT WAS USUALLY EVERY 5 TO 6 MONTHS because I would break them everytime I was "brushing them or washing them with soap" to try to clean them BEFORE putting them back in my mouth. It was definitely disappointing when I'd "snap" another one in pieces..!! Well, NOT ANYMORE, this little device is going to save me TONS OF MONEY. Don't get me wrong, I'm OCD...