FireTacks are the backbone of traditional night caches. Originally designed to mark trails for early morning and early evening use FireTacks are now an integral part of night caching. Use multiple colors or geotacks to create interesting night caches. There are even FireTacks that respond to UV light for a compound effect. The image to the right shows the various colours available for FireTacks: Blaze Orange, Ice White, FireFly, and Stealth. We recommend stealth as the primary colour for geocaching applications. Stealth is the least visible colour during the day thus making it harder for someone to brute force your night cache during the day.