OReviewer: As this cache defaces property with no mention of permission from the owner, I am forced to archive.
Guidelines: https://www.geocaching.com/play/guidelines#propertydamage
Do not damage property
Do not damage, deface, or destroy public or private property, especially archaeological or historical sites, when you place your cache.
Do not place caches in a location that requires or encourages geocachers to damage, deface, or destroy public or private property, especially archaeological or historical sites.
Do not harm plants, animals, or environment
Do not harm plant or animal life when you place your cache. Do not place caches in a location that requires or encourages geocachers to harm plant or animal life. In some areas, geocaching activity may need to cease for portions of the year due to sensitivity of some species.
The only exception is if a property owner gives explicit permission to attach a cache to a tree with hardware (for example, with nails). In this case, you must provide the explicit permission to the reviewer and state it on the cache page.