diff --git a/Traversal/DFS.py b/Traversal/DFS.py
index 2efa0fd..0393ec3 100644
--- a/Traversal/DFS.py
+++ b/Traversal/DFS.py
@@ -12,14 +12,15 @@ def DFS(grid, available_movement, gc_moveset, depth=0):
     possible_goals.append([a,b-1])
     house_in_area = False
     for location in possible_goals:
-        try:
-            cell = grid[location[0]][location[1]]
-            if(type(cell) == House and cell.container.is_full and cell.unvisited):
-                cell.unvisited = False
-                house_in_area = True
-                break
-        except:
-            continue
+        if location[0]>=0 and location[1]>=0:
+            try:
+                cell = grid[location[0]][location[1]]
+                if(type(cell) == House and cell.container.is_full and cell.unvisited):
+                    cell.unvisited = False
+                    house_in_area = True
+                    break
+            except:
+                continue
     if(house_in_area):
         xy = gc_moveset[-1]
         gc_moveset.append("pick_garbage")