I have a bridge and been using superfloss. I was satisfied with the product in the past, but now the product is useless. The threader part is way too soft, it bends and will not go in the tight spots. I've had to go back to threaders and regular floss. I called customer service, they sent me a coupon and a mail back packet for the defective stuff. The new superfloss I bought with the coupon is just as bad, totally unusable. Don't buy this product, quality control is an issue right now.