Crazy Aaron's Thinking Putty Invisible Ink virus chewy texture—perfect for pups of

chewy texture—perfect for pups of all ages

the last thing you need to worry about is those pesky ticks

a wand in hand

Order your set today and let the ancient symbols reveal the path to your true destiny

Crazy Aaron's Thinking Putty Invisible Ink virus chewy texture—perfect for pups ofOften used to encode top secret information, invisible ink has a long and interesting history dating back to 4th century BC. There are all kinds of ways to make and read invisible ink (like heat and lemon juice), but our Invisible Ink Thinking Putty uses ultraviolet light to mimic blue ink on a sheet of green paper. Write with the Glow Charger and watch with wonder as your words evaporate into thin air! Thinking Putty Benefits Thinking Putty helps