If you want to save them, then make them Kṛṣṇa conscious. That is the only remedy. Unless you are expert in saving your children by giving them Kṛṣṇa consciousness, then you are not . . . you should not become father and mother. That is real contraceptive method, that "I shall . . . We are married, undoubtedly, husband and wife, but unless we are competent to give protection to my children—no more death—we should not beget children." This is real contraceptive.
That is the instruction in the Śrīmad-Bhāgavatam: pitā na sa syāj jananī na sā syāt 'na mocayed yaḥ samupeta-mṛtyum (SB 5.5.18). Your duty is to give protection to children, father, mother. That's very good. But real protection is that "My children, this boy, this girl, has come in my belly. Now this is the last. I shall train them in such a way that next birth, he'll not have a material body." How it is? Yes, it is possible. How? Tyaktvā dehaṁ punar janma naiti mām eti kaunteya (BG 4.9). One can give up this material body . . . Everyone has to give it up. There is no doubt. But one is giving up this body and accepting another body, tathā dehāntara-prāptiḥ (BG 2.13). But there is another method, that he's not going to accept any more material body. That is said in the Bhagavad-gītā, tyaktvā dehaṁ punar janma naiti (BG 4.9): "After giving up this body, he's not going to accept another material body." Who? Janma karma ca divyaṁ ye jānāti tattvataḥ: "Anyone who has understood Kṛṣṇa as He is." This is the secret, to teach your children like that, that what is Kṛṣṇa. From the beginning you can do that. The children are under your control. Just like we are teaching these boys. They are simply chanting, dancing. That is Kṛṣṇa consciousness. They are advancing in Kṛṣṇa consciousness. It is not that useless education—after some years they will learn how to smoke biḍi. It is not like that. They'll never touch biḍi. This is education. Tan manye adhītam uttamam (SB 7.5.23-24). Even they are not literary person, they will have character and they'll become Kṛṣṇa devotee. That is real education. Don't think that "These boys are brought here. They're not giving any education, academic. They do not know what is history, what is geography." They know little, little; not very much. We don't require to know very much, neither we are very much concerned, learning A-B-C-D. Even without A-B-C-D they will be advanced in education. This is Prahlāda Mahārāja's instruction. Tan manye adhītam uttamam. One who has taken to Kṛṣṇa consciousness directly, he is actually advanced in education.