Clay_More said:
If it is true though, that everything from a summoned monster dissappears, it would be a perfect way of creating a medieval contraceptive.
Caliban said:Um, you guys do know that this wouldn't really work, right?
When the duration of the Summon Monster spell is up, the slaad returns to it's home plane. All of the slaad, including any eggs it had implanted. Same goes for any blood or body parts.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.