Our Classic Framed Diamond, Guard Dogs On Duty Keep Gate Closed Sign can be attached to the door, wall or window of your home or business. The sign text and design work is laser engraved into sturdy plastic. Each sign comes with an adhesive foam backing, allowing them to be attached to any flat surface. Comes in multiple colors. Our Dog and Pet signs are great for your home or business. This sign is great for letting guests and visitors know to keep the gate closed when entering your property.