Hammocks that have not been properly set up can harm or kill trees. A hammock should never be secured to a sapling or a tree that cannot accommodate a person’s weight. Tree damage primarily occurs when a hammock has been tied to a tree using cord or rope, which destroys the tree’s bark and subsequently exposes it to infection, insects, and environmental stressors. While eyebolts drill directly into the tree, they do not leave exposed openings in the bark because they are filled with the eye-hook. Often a tree will even produce sap around the hole to further seal any gap between the hardware and the surrounding bark. It is possible to purchase tree straps that can be used to suspend a hammock from trees without doing the trees any harm. Such straps can be found at hammock stores and many sporting goods stores.