great for scraping gunk off the tongue [SEP] these tongue scrapers do an excellent job of getting all the yucky stuff off your tongue which is loaded with bacteria and is the main source of halitosis i always brush my tongue with a stiff bristled tooth brush then my teeth with my sonicare and to finish off the routine i use my tongue scraper to get the last bit of slime off my tongue i have used a plastic tongue scraper for years and it does real well and so do these metal ones