This work investigates the utilization of a new pheromone distribution model for ANCOR. ANCOR is a novel routing algorithm for sensor networks. The main idea behind the algorithm is imitating the real acts of ants for finding new food resources and bringing them to their nests. A new pheromone distribution model for ANCOR, i.e. Optimal Pheromone Distribution Model will be presented, and its performance profits over the existing model will be discussed.