Been using it for years:
Another idea for getting peroxide in to your gums: Put hydrogen peroxide into a Water Pik and then spray the peroxide at your gums, as you usually would do with a Water Pik. I think the people I’ve heard of doing this have used a mixture of half water and half 3% peroxide. (The mixture is 1.5% peroxide.) Three percent hydrogen peroxide might be abit too strong to spray into your gums?
Holy Damn!, I thought to myself. Goonch the obsessive picture poster has never once in his life written a whole paragraph. Could this be a sea change?
But alas, it turns out that he still plagiarizes.