Instant glue was the only thing that stopped the bleeding when I removed one roosters spurs a couple of years ago (twisted off)--I even went to the vet's and got some of their super-duper quik-stop and it didn't work. My son came by and asked what I was doing, then told me to use instant glue--he said it hurts like %#@#%$^&, but works immediately.
DE also works--better than flour or cornstarch, but not as good as the glue.
DE also works--better than flour or cornstarch, but not as good as the glue.