To obtain sweetgrubs, players must use the raw rat meat found in the breweries to lure them out. If the player is successful, they can then bring the grubs to their brewery and use them on the corresponding hopper. If they are not, aggressive sweetflies will appear from the hive and attack, hitting minor damage. Even if the player is successful, the mounds usually collapse after taking several grubs, forcing them to either wait or find another mound.