Wood preservation is the process of treating wood to protect it from decay, insects, and environmental damage. This is important for extending the lifespan of wooden structures and products, such as furniture, decks, and fences. Common methods include chemical treatments, pressure treatment, and natural preservatives. The most widely used chemicals for wood preservation are copper-based compounds, borates, and creosote. These substances help prevent rot and insect infestations. Additionally, proper maintenance, such as sealing and painting, can further enhance the durability of preserved wood, ensuring it remains functional and aesthetically pleasing over time.