I had 2 of them. I kept each one for 5 years and regularly boiled it to clean it. The first did not have to change. But seriously, you can buy one of these and use it for the rest of your life. Excellent quality! Improves bad breath. The dirt you can scrape off is unsettling and scary, but reassuring that it will do the job. I have a Sonicare toothbrush and the bristles are too soft to clean my tongue. However, I would not use a regular toothbrush to clean my tongue. This thing is excellent. I have tried other tongue scrapers and they are nothing compared to them. I use it every time I brush [>2/day. Promise ;) ] !
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