The thread doesn't hold, the tension doesn't hold. Also the included dental floss is terrible, it breaks between teeth and gets stuck like crazy. Basically useless. I liked it because I hate using disposables every day (I have TMJ and can't open my mouth wide enough to manually floss) because I know they're so bad for the environment but reusable items are just rubbish.
BLIS Fresh Breath Kit: Potent BLIS K12 Oral Probiotic for Bad Breath & Halitosis Treatment - Clinically Proven Mouthwash, Tongue Scraper, Lozenges - 4 Week Supply
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