Go here and click "Personal Care" then you should see a coupon for $0.75/1 GUM Flossers. Starting next week (9/5) these are on sale for $1 at Weis and since they double coupons it would make them free. I'm pretty sure you could use this coupon to get them free or inexpensively elsewhere too!
Also there is a $1/1 GUM toothbrush coupon in the 8/8 Red Plum insert which would also get you free toothbrushes.
Just a note: my coupon didn't show up for me until I entered my zip code at the top.
Thanks For the Mommas!