Lawn-Kleen

Lawn-Kleen is a substance found in the sunken marketplace. Shasta is tasked by the witch of the jungle to retrieve a box of it in exchange for an antidote to the poison with which the witch has inflicted Shasta's panther Nali.

The substance is an artifact of the before people, and is white and granular, causes eyes to burn and water when near, and is found in lidded boxes.