the only 100% birth control is abstinence followed by surgical sterilization. both are probably not methods that interest you. since i do not know if you are a male or female. or your age. the "best" birth control is the one selected by you and your medical provider based on your medical history and personal preferences. there are numerous effective contraceptive methods but not all of them are appropriate for everyone. until you make that very important decision a condom should be used.
what is the best brithcontrol out there