Spermicides currently available over the counter have been sold for more than thirty years with an excellent safety and effectiveness record. It is true that spermicide can cause irritation when used very frequently and in very high doses. To minimize the irritation caused by spermicide, the FemCap is designed with a unique groove facing the vagina. This groove stores the bulk of the spermicide and minimizes irritation or leakage. The storage of the bulk of spermicide in this groove ensures immediate and prolonged exposure of sperm to the spermicide as soon as it is deposited into the vagina.