To use the Underground Exchange in Probably Stolen, place the exact items listed in an Underground Exchange Directive into your trash bin, make sure you've paid for janitorial service, and advance to the next day. Your exchanged items should appear in the trash bin the following morning. However, incorrect quantities, expired offers, and missing janitor service can prevent a trade from completing.
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How to Use the Underground Exchange
How Exchange Directives Work
Why Your Exchange Isn't Working
Tips to Avoid Losing Items
How to Use the Underground Exchange in Probably Stolen
The Underground Exchange is an overnight bartering system that lets you trade specific combinations of items for other goods. Instead of interacting with a visiting merchant or selling items at your counter, you complete exchanges through the shop's trash bin.
Follow these steps to complete a trade:
- Open your Underground Exchange Directive and find the offer you want to redeem.
- Collect the exact items and quantities specified in the exchange.
- Place the required goods into your shop's trash bin.
- Make sure your janitorial service is paid for before ending the day.
- Finish the day and check the trash bin the following morning for your exchange reward.
The most easily overlooked requirement is janitorial service. Simply putting items in the trash doesn't automatically complete an Underground Exchange. The overnight service needs to be active for the transaction to work.
Once the exchange has been processed, retrieve your reward from the trash bin rather than looking for it in your normal inventory or expecting a customer to deliver it.
How Underground Exchange Directives Work
The Underground Exchange Directive tells you which goods can be traded and what you'll receive in return. These are specific item-for-item offers, not a system where you can deposit anything and receive something of similar value.
Match the Exact Exchange Requirements
Each offer needs the correct combination of goods. Substituting a similar item or providing the wrong quantity can prevent the exchange from being recognized.
Check the Directive immediately before placing your items into the trash bin. Exchange offers can refresh, meaning a trade you previously prepared may no longer match the available deal.
This is especially important when saving materials for an expensive exchange. Having the correct items for an older offer doesn't guarantee those items will qualify for the current one.
Underground Exchange Daily Limits
Each exchange offer can be redeemed once per day. Attempting to complete the same trade twice during a single night can result in the additional items not producing another reward.
Don't place two identical sets of materials into the bin expecting two copies of the output. Complete one redemption and check the result before using more resources.
Why Is the Underground Exchange Not Working?
If you deposited the required items but received nothing the next morning, check the transaction conditions before trying again. The trash bin serves as both the input and output location, but the exchange only works when its requirements are satisfied.
| Possible Problem | What to Do |
|---|---|
| Janitorial service isn't active | Make sure you've paid for janitorial service before advancing to the next day. |
| Incorrect items or quantities | Compare your deposited goods with the exact requirements in the Directive. |
| Offer has changed | Check the currently available exchange instead of relying on an older recipe. |
| Same offer redeemed twice | Limit each offer to one redemption per day. |
| Multiple offers use overlapping materials | Try processing one exchange at a time to avoid conflicting item requirements. |
| Reward appears missing | Check the trash bin the following morning, since rewards are delivered there. |
Can Underground Exchange Trades Conflict?
Some exchanges require materials that are also used in other offers. Trying to process overlapping recipes together can create problems when the game determines which transaction should receive those items.
I'd avoid combining complicated exchanges in a single overnight deposit, especially when valuable equipment is involved. Completing one trade at a time makes it easier to confirm that the correct reward was received before committing additional resources.
How to Avoid Losing Items in the Underground Exchange
The biggest risk with the Underground Exchange is treating your trash bin like ordinary storage. It's also where unwanted items go, so an incorrect exchange can leave valuable goods in a place where you don't want them.
Before ending a day, make a quick check of the bin and the active Directive. Confirm that the items are intended for one valid offer, that the quantities match, and that the required service is active.
Keep Exchange Materials Separate Until You're Ready
Rather than depositing materials into the trash bin throughout the day, keep them in storage until you're prepared to complete the exchange. This reduces the chance of mixing unrelated items with your intended trade.
You can also use the Blue Label to name storage containers according to their contents. Our Probably Stolen Blue Label Guide
Consider the Value of What You're Trading
An Underground Exchange reward isn't automatically worth more than the items you're giving up. Compare the usefulness of the reward with the goods required to obtain it, particularly when an offer involves equipment or valuable consumables.
I'd also avoid spending money needed for rent just to prepare an optional exchange. If you're working toward purchasing the property, our Probably Stolen How to Buy the Store Guide
For most exchanges, the safest routine is simple: verify the current offer, deposit exactly one valid set of items, confirm janitorial service is active, and collect the reward the next morning. Once you've established that routine, the Underground Exchange becomes a useful way to obtain goods without relying entirely on ordinary shop transactions.
