Originally Posted by aka123

Can you even sterilize anyone with single injection? You know, even you are intentionally doing it? For example men are still sterilized by cutting the tubes and similar method is used for women. Wouldn't some injection be easier if there would be one.

There was some discussion about this some time ago, but I can't remember the end results clearly. Something about some injection that you had to take time to time to have the desired effect, if I don't remember incorrectly.