Puzzle & Mystery Cache lovers rejoice! The Invisible Ink Pens for use with UV Lights are here and they work beautifully :) Now you have the ultimate tools you need to set an exciting new challenge that the whole family can enjoy!
So put your thinking caps on and let's go have some fun!
Set cache instructions in plain site, but completely invisible! Leave hints to challenges, waymarkers, upgrade your night cache and more. Your imagination is the only limit to the fun to be found with these great new tools for caching :)
This fiber tipped marker from Kearing (R) writes on virtually any nonporous surface including plastic, glass, metal etc. The ink is odorless, colorless, and your messages are invisible but illuminate bright blue to UV Lights.
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