Proper usage is crucial for maximizing the effectiveness of barrier methods:
For condoms, ensure they are worn before any genital contact. Check the expiration date and avoid using oil-based lubricants with latex condoms. Diaphragms and cervical caps should be checked for damage and used with spermicide. They must be inserted correctly and left in place for several hours after intercourse. The contraceptive sponge should be moistened with water before insertion and left in place for at least six hours post-intercourse.
