This mod brings back the classic burglar system but includes over 20 unique ways to stop them, such as Burglar Alarms (costing 1,500 Simoleons) and special abilities for Vampires or Spellcasters to freeze or scare off intruders.

This mod is particularly useful for stopping theft in public spaces, as it prevents NPCs from stealing food at restaurants . 3. Disabling "Sharing is Caring" (No Mods Required)

Use the "Private Dwelling" lot trait to significantly reduce the number of random visitors who might have itchy fingers.

Advanced users can use the MCCC Tuner to disable the specific "swipe" interaction for autonomous NPCs. 2. Specialized Anti-Theft & Security Mods

For many players, the MC Command Center (MCCC) is the ultimate solution. It provides a "fix" for kleptomaniac NPCs by allowing you to move a selected Sim's inventory back to your household inventory, effectively returning stolen goods.

Use the MC CAS settings to exclude the Kleptomaniac trait from your game entirely. This prevents the game from randomly assigning it to new townies.

How to stop Sims guests from stealing everything? - Facebook

You can disable NPC voting in the Game Options > Eco Lifestyle menu to prevent these chaotic policies from ever being enacted again. 4. Basic Household Security