These "special ingredients" are just what you may need in some "special situations". Manufactured under contract by DSG Laboratories to fulfill the occasional unusual operational requirement of CIA and other federal agents, these products are now available for non-governmental sale. Use only with utmost discretion.
Just pour this into a drink container (soda, coffee, etc.). Once your target finishes his drink, his mouth, teeth and tongue will have turned a most vomit-retching puke-yellow color! And he won't even know it, at least until he sees the horrified looks on other's faces as they try to keep from tossing their own cookies. "A drink before your speech, Mayor?"