Prank Crime Scene,police Line Do Not Cross ,Police and Caution Biohazard Barricade Tapes (40 Feet, Orange & Black "Caution Biohazard") Manufactured from high strength polyethylene. Ideal for messy bedrooms, kitchens,bathrooms(friend's office and other humorously hazardous areas:-) Forensic science project for schools. Funny gift for Birthdays Great gag gift