Recent research in efficient flooding techniques in wireless sensor networks focuses on minimizing redundant transmissions, reducing energy consumption, and improving data dissemination reliability. Modern approaches employ controlled flooding mechanisms, probabilistic rebroadcasting, and topology-aware methods to overcome the broadcast storm problem. Techniques such as connected dominating sets, clustering, and adaptive neighbor selection are used to limit unnecessary message propagation while ensuring full network coverage. These optimized flooding protocols enhance scalability, prolong network lifetime, and improve communication efficiency in dense and large-scale WSN deployments.