diff --git a/project/assets/configs/seasonalevents.json b/project/assets/configs/seasonalevents.json
index e1e9e1f5..e412de2a 100644
--- a/project/assets/configs/seasonalevents.json
+++ b/project/assets/configs/seasonalevents.json
@@ -7751,7 +7751,9 @@
 				"zombieSettings": {
 					"enabled": true,
 					"mapInfectionAmount": {
-						"laboratory": 100
+						"laboratory": 100,
+						"factory4": 0,
+						"Sandbox": 0
 					},
 					"disableBosses": [
 						"laboratory"
diff --git a/project/assets/database/locations/sandbox_high/base.json b/project/assets/database/locations/sandbox_high/base.json
index 2b6a25bc..687d7d3e 100644
--- a/project/assets/database/locations/sandbox_high/base.json
+++ b/project/assets/database/locations/sandbox_high/base.json
@@ -389,6 +389,7 @@
       "CrowdCooldownPerPlayerSec": 300,
       "CrowdsLimit": 2,
       "InfectedLookCoeff": 2,
+      "InfectionPercentage": 0,
       "MaxCrowdAttackSpawnLimit": 20,
       "MinInfectionPercentage": 0,
       "MinSpawnDistToPlayer": 50,
diff --git a/project/src/services/SeasonalEventService.ts b/project/src/services/SeasonalEventService.ts
index 25caae1f..1132f0b1 100644
--- a/project/src/services/SeasonalEventService.ts
+++ b/project/src/services/SeasonalEventService.ts
@@ -483,11 +483,18 @@ export class SeasonalEventService {
         infectionHalloween.DisplayUIEnabled = true;
         infectionHalloween.Enabled = true;
 
-        for (const locationKey in zombieSettings.mapInfectionAmount) {
-            this.databaseService.getLocation(locationKey.toLowerCase()).base.Events.Halloween2024.InfectionPercentage =
-                zombieSettings.mapInfectionAmount[locationKey];
-            this.databaseService.getGlobals().LocationInfection[locationKey] =
-                zombieSettings.mapInfectionAmount[locationKey];
+        for (const infectedLocationKey in zombieSettings.mapInfectionAmount) {
+            const mappedLocations = this.getLocationFromInfectedLocation(infectedLocationKey.toLowerCase());
+
+            for (const locationKey of mappedLocations) {
+                this.databaseService.getLocation(
+                    locationKey.toLowerCase(),
+                ).base.Events.Halloween2024.InfectionPercentage =
+                    zombieSettings.mapInfectionAmount[infectedLocationKey];
+            }
+
+            this.databaseService.getGlobals().LocationInfection[infectedLocationKey] =
+                zombieSettings.mapInfectionAmount[infectedLocationKey];
         }
 
         for (const locationId of zombieSettings.disableBosses) {
@@ -504,6 +511,23 @@ export class SeasonalEventService {
         this.addEventBossesToMaps("halloweenzombies", activeMaps);
     }
 
+    /**
+     * BSG store the location ids differently inside `LocationInfection`, need to convert to matching location IDs
+     * @param infectedLocationKey Key to convert
+     * @returns Array of locations
+     */
+    protected getLocationFromInfectedLocation(infectedLocationKey: string): string[] {
+        if (infectedLocationKey === "factory4") {
+            return ["factory4_day", "factory4_night"];
+        }
+
+        if (infectedLocationKey === "sandbox") {
+            return ["sandbox", "sandbox_high"];
+        }
+
+        return [infectedLocationKey];
+    }
+
     protected addEventWavesToMaps(eventType: string): void {
         const wavesToAddByMap = this.seasonalEventConfig.eventWaves[eventType.toLowerCase()];