Didn't do the peroxide; we got to it right away. Ironically, I was the one bleeding (and, unfortunately, profusely)! My friend's husband used that trick to clean the carpet while other friends rushed me to the hospital!
I must say, though, it worked great!!
One rainy night several years ago I came back from the emergency room with a gash in my foot sewed up. The doobs at the hospital couldn’t even give me a sturdy trash bag, instead I got a flimsy plastic like dry cleaners use, and then I had to park a block from my apartment. Stumping across the living room on the way to the bathroom to clean up my foot, I left LOTS of blood spots.