diff --git a/domain/world.py b/domain/world.py
index 7f51a9d..f31d84e 100644
--- a/domain/world.py
+++ b/domain/world.py
@@ -1,3 +1,4 @@
+from decisionTree.evaluate import evaluate
 from domain.entities.entity import Entity
 
 
@@ -16,6 +17,8 @@ class World:
     def add_entity(self, entity: Entity):
         if entity.type == "PEEL":
             self.dust[entity.x][entity.y].append(entity)
+        elif entity.type == "EARRING":
+            self.dust[entity.x][entity.y].append(entity)
         elif entity.type == "VACUUM":
             self.vacuum = entity
         elif entity.type == "DOC_STATION":
@@ -30,7 +33,10 @@ class World:
         return bool(self.obstacles[x][y])
 
     def is_garbage_at(self, x: int, y: int) -> bool:
-        return bool(self.dust[x][y])
+        if len(self.dust[x][y]) == 0:
+            return False
+        tmp = evaluate([self.dust[x][y][0].props])
+        return bool(tmp[0])
 
     def is_docking_station_at(self, x: int, y: int) -> bool:
         return bool(self.doc_station.x == x and self.doc_station.y == y)