Oh, my god, I just checked our children's toothpaste, it has flu

My kids use same toothpaste, but one got cavity at 3, another one didn't at all. Diet is very important. First one's nursery school gave them juice before nap time, I didn't realize then. Second one is cookies monster, candy eater. I never forbid it. But I have a house rule. No juice, no soda. No candy or cookie after dinner. Rinse mouth after eating.