Please Pick Up After Your Pet Sign, Pick Up After Your Dog Sign, 3M Engineer Grade Prismatic .080 Reflective Outdoor Aluminum, 12" x 18" - By My Sign Center, A87-238RA Made in the USA. Pre-Drilled Holes for Wall, Post or Fence Mounting. Up To 7 Years Outdoor. Made Out of 3M Engineer Grade Prismatic .080 Reflective Aluminum.. A Clear Polyester Over-Laminate Is Added to Give it Extra Protection with A Nice Glossy Look.