Every home, business establishment or other enclosed location or property within the Town of DeWitt which shall use the services of a sentry guard dog shall be required to display in a prominent place on the front and rear of the building a sign of a type which has been approved by the Chief of Police indicating that a sentry dog is stationed therein. Where the sentry dog is located outside a structure in a fenced-in enclosure, signs of a type which has been approved by the Chief of Police indicating that a sentry dog is stationed therein shall be prominently affixed to all gates and entryways to such enclosure, and, in addition thereto, such signs shall be affixed to the fence around its entire perimeter, not more than 30 feet apart between any two such signs. Where the use of a sentry dog has been discontinued on a permanent basis therein, it shall be the duty of the licensee who furnished the dog or the owner of the property to remove the sign. It shall be a violation of this article by the owner, lessee or party in control of the premises to post or leave posted a sign indicating the presence of a sentry dog where the services of such dog are not used.