Promising review: "I love WD-40 products and use them for everything. I spray on shovels to keep dirt or snow from sticking, spray around windows and thresholds to deter bugs, clean Sharpies off wood ...

The best water flossers to add to your cart this Christmas, as recommended by our expert testers. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.