Lantadyme is in high demand to create Antifire and Magic potions. It is often profitable to clean the grimy herbs and sell them on the Grand Exchange. Like all methods involving large amounts of buying and selling, it is recommended to test the market first to make sure cleaning lantadyme is profitable. 28 herbs can be cleaned per inventory, and each inventory can take from 16.8 to 20 seconds. Herbs are cleaned at 0.6 seconds per herb, so a maximum of around 5,000 herbs can be cleaned per hour. Please note that Grimy lantadymes have a buying limit of 10,000 every four hours.