The answer is Surgical Contraceptive Methods e.g. Vasectomy(For males) and Tubectomy(Females).
Vasectomy:- In this method vas deference is cutted and tied so that sperms can't reach uthera.
Tubectomy:- In this method both fallopian tubes are cut and tied, so that no egg can head towards the site of reproduction(Cervix).
Note:- Both process are irreversible.
