Termites are well known for their deterioration pest. Instead by using chemical preservatives as a remedy, plants based products are derived from any potential plants that give positive effectiveness to test as an eco-friendly anti-termite agents. The aim of the study is to investigate anti-termite activities in the methanolic crude extracts of Sesbania grandiflora on wood against termites. 1% of concentration has been used in the experiment on mortality test, wood decay test and physical properties of wood. Impregnated filter paper with commercial preservatives, extractive preservative and control specimen were tested for a week to observe the toxicity effects against termites. Followed with the wood decay test, 1 month exposure was being observed on the potential of the repellent effects by using commercial preservatives, extractives preservatives and control specimen. The thickness swelling and water absorption in these study does not show any significant difference among the specimens with different treatments. This study is concerned on the determination of the potential of Sesbania grandiflora on anti-termite activities. The results showed that, methanolic crude extracts of Sesbania grandiflora leaf showed positives response in against termites. Hence, it has potential as wood preservatives against termites.