They are not venomous
Corn snakes, like many colubrid snakes, are not venomous because they lack the specialized glands and fangs required for venom production and delivery. Instead, they are constrictors, which means they subdue their prey through constriction rather than venom injection. Corn snakes have powerful muscles and flexible bodies that can overpower their game.
A corn snake detects potential prey by using its keen sense of smell and flicking its tongue to pick up scent particles in the air. When the time is right, the corn snake strikes, seizing the prey with its sharp teeth and coiling its body around it. They then swallow their prey whole, usually head first.