Not really an effective one.
Given the right conditions, coccidia can survive up to 18 months in soil. They don't survive long below freezing or above 130F. They also can't survive in completely dry soil.
Even if you baked or froze your soil, they would return. They are spread on people's shoes and the feet of wild birds and insects. The many species of coccidia are host species specific. That means those that infect chickens are different from those that infect cattle, dogs, goats and other birds like turkeys. That is why wild birds can carry them and not be affected.
The trick is to gradually expose the birds so they can become immune.
What some people do is to take a small piece of their sod and put it in the brooder so chicks can get gradual exposure. Keep bedding bone dry so the eimeria can't complete their life cycle. Chicks that have never had exposure and then placed on wet soil, especially when crowded will have severe outbreaks.