By combining this essence with a mixture of monstrous spider toxin, Drow alchemists have learned how to make extremely deadly poisons that target specific races. It requires a Craft (alchemy) check (DC 20) instead of the normal Craft (poisonmaking) skill check to create a single vial of desiccator poison. Failure indicates that the ingredients have been wasted, necessitating another use of the Desiccator.
Desiccator poison is tailored for a specific race. It is a contact poison (DC 19) that causes 3d6 initial Constitution damage and 3d6 secondary Constitution damage if used against a member of the same race that was used to make the desiccator poison. If the poison comes into contact with a different race, it is not nearly as effective (1d2 initial Constitution damage, no secondary damage).
Drow assassins enjoy using this poison when stalking specific prey. Although expensive, drow delight in knowing that the pain and torment of one victim was used to cause the death of another.