Is a possible problem in using a diaphragm or cervical cap. (Points 2)?

One possible problem with using a diaphragm or cervical cap is that they can be less effective than other contraceptive methods if not used correctly. Users must ensure proper insertion and use spermicide to enhance effectiveness, which requires diligence and may not always be convenient. Additionally, these methods do not protect against sexually transmitted infections (STIs), making them less suitable for individuals at risk of STIs.