Male condoms and the diaphragm with spermicide have typical use first-year failure rates of 18% and 12%, respectively.[1] With perfect use condoms are more effective with a 2% first-year failure rate versus a 6% first-year rate with the diaphragm.[21] Condoms have the additional benefit of helping to prevent the spread of some sexually transmitted infections such as HIV/AIDS, however, condoms made from animal intestine do not.[2][57]