Probably Stolen Underground Exchange & Sawyer’s Cleaning
Sawyer, a Lower Level janitor, arrives on Day 10 and offers paid cleaning and the Underground Exchange. Put the requested goods in your trash can, pay for cleaning before you sleep and collect the reward next morning. Two Dream Dust with a combined purity under 60 give nothing; 120+ unlocks the rare rewards.
On this page
Cleaning costs and why to pay
Every night you skip cleaning adds garbage, and from the second night it cuts your shop’s base attractiveness.
| Situation | Cost |
|---|---|
| Ordinary cleaning | 3 + day ÷ 10 (5 Credits on Day 20) |
| After vandalism | 75 + day ÷ 10 |
| With Sawyer’s Crew perk | Free (vandalism: 30 + day ÷ 5) |
| Black Market distrusts you | Double |
Garbage vs attractiveness
| Nights without cleaning | Attractiveness (base 250) |
|---|---|
| 1 | 250 |
| 2 | 200 |
| 3 | 175 |
| 4 | 150 |
| 5+ | 125 |
At 5 Credits a night, cleaning almost always pays for itself.
How to use the Underground Exchange
- 01
Unlock it through Sawyer
He introduces the Exchange after his Day 10 visit (Day 1 with the Sawyer’s Crew perk). Black Market distrust blocks it.
- 02
Read the current requests
Three of seven promotions rotate every 7 days, so old lists go stale.
- 03
Put the goods in the trash can
Anything else in the can is destroyed when the cleaning runs — take out what you want to keep.
- 04
Pay for cleaning and sleep
Exchanges run first, then the rest of the trash is cleared, then rewards land in the trash area.
- 05
Collect next morning
Each recipe runs at most once per night. A successful exchange also raises Black Market standing slightly.
Permanent exchange recipes
| Put in the trash | You get |
|---|---|
| 2 Dream Dust | A purity-based reward (see below) |
| 3 Water Filters | 1 fresh prepared filter |
| 2 modules | A random different module (1% chance of a Neural Core) |
| 1 Command Keycard | 2 random Security, Engineering or Medical keycards |
| 2 poison items | A battery charged 0–100 by their value |
| 2 ammunition items | Food (Galaxy Blend and Cat Chocolate Bar among the outcomes) |
| Standard Smuggler bay + 8 pink injectors | An improved smuggler bay |
Two Dream Dust: purity tiers
Purity is added after rounding each dust down, so two 59.9% dusts count as 118. Four-dust promotions instead use the average purity; at 99%+ they pay in genuine Immunin, blue blood and black injectors.
| Combined purity | Result |
|---|---|
| Under 60 | Both consumed, nothing back |
| 60–119 | One ordinary reward: filter, meat, Fair ingot, electronics, Kitchen Knife, medical supplies, Food Stamp, blood and more |
| 120+ | Rare rewards unlocked (breeder, token, 100-energy battery) and doubled electronics, medical supplies and blood; the knife roll adds a Meat Cleaver |
Rotating promotions
| Put in | You get |
|---|---|
| 4 Dream Dust | Medical reward by average purity |
| 3 Security / 4 Engineering / 4 Medical keycards | A locked supply crate |
| 5 seeds | A 100-energy battery |
| 1 Scavenger’s token | +25 Black Market standing |
| 2 pink injectors | A genuine unexpired Immunin |
Common questions
How does the Underground Exchange work in Probably Stolen?
Put the requested items in your trash can, pay for Sawyer’s cleaning service before sleeping and collect the reward from the trash area the next morning.
Why did my Dream Dust exchange give nothing?
The two dusts’ combined purity (each rounded down) was under 60. Use purer dust.
Is the Underground Exchange safe from Security?
The exchange itself is not tracked, but any other contraband or evidence in your shop can still be inspected.
Sources & version notes
Community game-data research. Sources reviewed October 31, 2026. This guide does not claim an independent in-game test.
- Nico Wiki: Sawyer
Introduction day and Exchange process.
- Nico Wiki: janitorial service
Cleaning cost formula, garbage and attractiveness table, processing order.
- Nico Wiki: Underground Exchange
Permanent recipes, Dream Dust tiers and promotions. Some four-dust bands are only on the Chinese page.