Which contraceptive method requires insertion and can be used before sexual intercourse?

The contraceptive sponge is designed to be inserted into the vagina prior to sexual intercourse. It contains spermicide that works to prevent sperm from reaching the egg, making it an effective method of contraception when used correctly. Since the sponge is a barrier method, it provides immediate protection against pregnancy as soon as it is inserted, offering flexibility in its use before engaging in sexual activity.

In contrast, the contraceptive pill and patch are hormonal methods that need to be taken or applied on a regular schedule to be effective and do not provide immediate protection upon application. The male condom is also a barrier method, but it is not inserted; rather, it is worn externally during intercourse. Therefore, the sponge stands out as the method that specifically involves insertion and can be utilized immediately before sexual intercourse.