patentex oval :
The Pearl Index states the number of pregnancies in a group of 100 women who used this contraceptive method for one year. Patentex oval's Pearl Index is 0.3 - 1.6. This means that of 100 women who used this contraceptive method for 12 months, only 0.3 - 1.6 women became pregnant. In other words, Patentex oval offers 98.4 - 99.7% safety against unwanted pregnancy.

MI ga koristimo uz "pazi na finale" metodu tako da mi je to dovoljno. Nije 100% ali nije nijedna kontracepcija pa ok...
sorry na OT