FIELD REFERENCE / Tools & mods
Probably Stolen Mouse Trap Guide
Set up an overnight catch, then judge the result as a chance—not a promise that cheese always produces a rat.
Put Processed Cheese in the Mouse Trap's bait slot, leave it set for the night and inspect it the next morning. The community item reference lists a much higher catch chance with cheese than without it, but failed baited nights are possible and bait can disappear without a catch.
The numerical probabilities on this page are community item-data figures, not measurements from our own game sessions. Check your item and mod settings if behavior differs.
Where to look for a Mouse Trap
The item reference lists Dr. Jackson's Tools stock and the Dumping Grounds as possible sources. Neither route means every visit must offer a trap. If you are already planning a shop visit or scavenging trip, check for it without budgeting your entire run around a guaranteed drop.
Our recommendation is to prepare a place for the catch before expanding into repeated trapping. A trap solves acquisition; it does not by itself provide a complete animal-care setup. Choose Rat Wrangler if you want an opening built around that business rather than assuming any captured rat creates immediate passive income.
Evidence: Wikily: Mouse Trap and bait
Set the trap and check the next morning
- Keep the Mouse Trap accessible in the shop and open its item panel. Identify the bait slot rather than placing food next to the device.
- Insert Processed Cheese as the documented bait. Verify that it is inside the slot.
- Let the night pass. This is an overnight check; repeatedly opening the panel during the same day does not create another night's chance.
- Inspect the trap next morning for a rat and check whether bait remains.
- Move a catch into the setup you prepared for it before relying on another catch. If the trap is empty, replenish missing bait and evaluate it over further nights.
Evidence: Wikily: Mouse Trap and bait
Understand the reported catch chances
For illustration, if a 50% nightly chance is independent and unchanged, four failed nights in a row have a probability of 0.5 × 0.5 × 0.5 × 0.5 = 6.25%. That is a mathematical example using the listed rate, not proof that a particular save implements independent rolls. It shows why a short unlucky streak cannot by itself diagnose a broken trap.
| Trap state | Community figure | Meaning |
|---|---|---|
| No bait | 1% per night | A possible catch, but not a dependable short wait. |
| Processed Cheese fitted | 50% per night | One failed night is entirely compatible with a working trap. |
| No catch on a baited night | 25% chance of losing the cheese anyway | Missing bait does not prove that a rat was caught and vanished. |
Evidence: Wikily: Mouse Trap and bait
Budget bait and space before scaling up
Our advice is to compare the bait you consume with the use you have for the catch. Do not buy a large cheese stock solely because a reference says 50%: the result is variable, and the animal still needs somewhere to go.
Keep a simple record for a few nights: bait present before closing, bait present next morning, catch present, and any mod changing animal mechanics. This is more informative than counting how often you clicked the trap. If a catch is not useful to your shop yet, postpone scaling rather than filling working space with a production chain you have not prepared.
| Before closing | Next morning |
|---|---|
| Processed Cheese visibly in slot | Is it still there? |
| Trap available for a catch | Is a rat present? |
| Receiving setup prepared | Can the catch be moved without disrupting other work? |
| Same mods and game settings | Did anything change during the comparison? |
Why the trap is empty
- No full night has passed: wait for the overnight process before assessing the catch.
- The cheese was beside the trap, not in the bait slot: inspect the panel.
- The bait was consumed on an unsuccessful night: replace it if you want another baited attempt.
- You are seeing ordinary random failure: a listed chance below 100% does not promise a result on a particular night.
- The behavior is modified: inspect the mod's documentation and compare in an unmodified test run before reporting a base-game problem.
COUNTER QUESTIONS
Frequently asked questions
Does the Mouse Trap need electricity?
The item reference lists no nightly power demand. Treat it as a baited trap, not as a battery-powered production machine.
Why did the cheese disappear with no rat?
The community record includes bait loss on unsuccessful nights. Check the slot and replenish it instead of assuming every missing cheese represents a lost catch.
Can I catch a rat without cheese?
The reference lists a small unbaited chance. Cheese raises that chance substantially, but neither setup guarantees a particular night's result.
Sources & evidence
Source notes identify the basis for this guide. Your current in-game tooltips and dialogue take precedence when a patch or mod changes a mechanic.
- Wikily: Mouse Trap and bait ↗
Community item data for bait, catch probability and stock sources. Chance is not a guaranteed waiting time.
Found a discrepancy? Send the page link and supporting evidence.