Pet Alert Decals by Rescue Rover [ALRT01] Pet Alert Decals are designed to alert firemen, police or neighbors that there is an animal or animals inside your dwelling. The decals are 4" x 5" and made of strong weather-proof vinyl static cling material that will not fade with bright vibrant red color for high,easy alert visibility. Pet Alert Decals will adhere to any clean gladss surface without adhesive and can be placed on any inside window areas and can easily be removed and reused. 2 decals per package. Size: 4" x 5" (2 decals per pack) Price: $3.99