Giant Green Spiderwebs with 4 Spiders. Blacklight Makes it Glow! This Can Be Used For So Many DIY Halloween Ideas. This Green Spiderweb Decoration Can Be Used Both Indoor And Outdoor. With A Blacklight, The Possibilities Are Limitless. Make your Halloween dreams come true– no matter what you have in mind, you have all the tools you need for the ultimate spidery setup! Turn those home-grown ideas into a reality, and be the envy of trick-or-treaters near and far!