An animal electric shock guard includes a pair of flexible flat conductors extending side-by-side in slightly spaced apart relation on a flexible support strip which adheres to the outer surface of a trash container lid. The conductors are the sides of an open circuit which is closed by the wet nose...http://www.google.com.hk/patents/US5864292?utm_source=gb-gplus-share專利 US5864292 - Animal electric shock guard
