How much was ingested?
When was this ingested?
Is he having any symptoms?
About 1-2 tablespoons of pellets.
About an hour and a half ago.
No symptoms yet.
The most effective treatment for a dog who has eaten rat poison involves giving large doses of vitamin K, which helps restore the blood's ability to clot. Other supportive measures, like IV fluids and blood transfusions are also commonly administered to dogs.
The fact is you can not treat this at home, this is the most toxic thing your dog could have ingested and without treatment he will die. And it will be a very painful death, please do not hesitate to get him to a vet asap. The vomiting will not help the situation.