Reported disposal steps
Pack the barrel, leave the store after closing and travel to the Dumping Ground. Move the barrel into the GROUND panel, then return. Read the warning carefully: other items left there may also be lost.
Why a barrel can come back
In the reported run, Georgio returned the first discarded barrel the next day. The author took it back to the Dumping Ground on another night; it then stayed gone. Treat this as a documented player observation, not our own test.
Why the ordinary trash method disappoints
The same walkthrough reports that customers refuse the barrels and that paid janitorial service did not clear one placed in the Trash Can. Check the current build if your results differ.
Before accepting more waste
Our suggestion is to inspect your available space and the activities you want to complete that evening before accepting an unfamiliar disposal job. An immediate payment does not tell you the time cost of handling the items.
Evidence and version limits
This page summarizes the linked October 29 player walkthrough in new wording. We have not confirmed the disposal behavior in the latest build, and do not recommend unverified container or trash exploits. Water treatment and barrel disposal should not be assumed to use the same mechanic.
Sources & scope
AllThingsHow disposal walkthrough. Game description: official Steam store. We have not independently play-tested this guide. No specific fix, performance result or progression outcome is guaranteed.