I've always preferred them to standard dental floss. Easy to use. I've been using them for years and you have to replace the handle from time to time. So it would be nice to have a spare on hand. I would say it will be over a year maybe two before it breaks. As for dental floss. They work fine. They don't break that often. Not even a package. Maybe one breaks every 3 packs or something. You'll get your money's worth checking out great deals at Revain. Of course, they cost differently than sellers.
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