Post Protector provides simple, slide-on barrier protection for in-ground posts. Moisture is not the cause of decay but is 1 of 3 conditions needed for decay to occur. The conditions: 1 Moisture, 2 Oxygen and 3 Suitable temperature. These conditions enable the soil-dwelling or atmospheric decay fungi, as well as termites and other subterranean insects, to feed on the wood fiber. Decay/Degradation of ground-contact wood is caused by the action of wood destroying organisms feeding on the wood. The chemical preservatives protection strategy is to poison the wood fiber, rendering it an unsuitable food source for the wood destroying organisms. The downside to that approach is that all chemical preservatives eventually lose resistance to decay and insect infestation. Post Protector becomes the perfect complement to the pressure treated (or cedar) post by simply providing a physical barrier isolating the post so the wood-destroying organisms have NO access to the post.