diff --git a/include/constants/metatile_labels.h b/include/constants/metatile_labels.h
index 552a615fa..fc37c123d 100644
--- a/include/constants/metatile_labels.h
+++ b/include/constants/metatile_labels.h
@@ -1,6 +1,12 @@
 #ifndef GUARD_METATILE_LABELS_H
 #define GUARD_METATILE_LABELS_H
 
+// gTileset_General
+#define METATILE_General_MuddySlope_Frame0 0x0E8
+#define METATILE_General_MuddySlope_Frame1 0x0E9
+#define METATILE_General_MuddySlope_Frame2 0x0EA
+#define METATILE_General_MuddySlope_Frame3 0x0EB
+
 // gTileset_Building
 #define METATILE_Building_PC_Off 0x004
 #define METATILE_Building_PC_On  0x005
@@ -100,6 +106,13 @@
 #define METATILE_Fortree_BridgeOverTrees_Raised  0x256
 #define METATILE_Fortree_BridgeOverTrees_Lowered 0x257
 
+// gTileset_SootopolisGym
+#define METATILE_SootopolisGym_Ice_Cracked 0x20E
+#define METATILE_SootopolisGym_Ice_Broken  0x206
+
+// gTileset_Fallarbor
+#define METATILE_Fallarbor_AshGrass    0x20A
+#define METATILE_Fallarbor_NormalGrass 0x212
 
 
 
diff --git a/src/field_effect_helpers.c b/src/field_effect_helpers.c
index c715da25d..fb883b105 100755
--- a/src/field_effect_helpers.c
+++ b/src/field_effect_helpers.c
@@ -868,13 +868,13 @@ u32 FldEff_Unknown22(void)
     return 0;
 }
 
-void StartAshFieldEffect(s16 x, s16 y, u16 c, s16 d)
+void StartAshFieldEffect(s16 x, s16 y, u16 metatileId, s16 d)
 {
     gFieldEffectArguments[0] = x;
     gFieldEffectArguments[1] = y;
     gFieldEffectArguments[2] = 0x52;
     gFieldEffectArguments[3] = 1;
-    gFieldEffectArguments[4] = c;
+    gFieldEffectArguments[4] = metatileId;
     gFieldEffectArguments[5] = d;
     FieldEffectStart(FLDEFF_ASH);
 }
diff --git a/src/field_tasks.c b/src/field_tasks.c
index dff812482..68ff082b6 100644
--- a/src/field_tasks.c
+++ b/src/field_tasks.c
@@ -104,7 +104,12 @@ static const u16 sSootopolisGymIceRowVars[] =
     0
 };
 
-static const u16 sMuddySlopeMetatiles[] = {0xe8, 0xeb, 0xea, 0xe9};
+static const u16 sMuddySlopeMetatiles[] = {
+    METATILE_ID(General, MuddySlope_Frame0),
+    METATILE_ID(General, MuddySlope_Frame3),
+    METATILE_ID(General, MuddySlope_Frame2),
+    METATILE_ID(General, MuddySlope_Frame1)
+};
 
 static void Task_RunPerStepCallback(u8 taskId)
 {
@@ -524,7 +529,7 @@ void SetSootopolisGymCrackedIceMetatiles(void)
         for (y = 0; y < height; y++)
         {
             if (IsIcePuzzleCoordVisited(x, y) == TRUE)
-                MapGridSetMetatileIdAt(x + 7, y + 7, 0x20e);
+                MapGridSetMetatileIdAt(x + 7, y + 7, METATILE_ID(SootopolisGym, Ice_Cracked));
         }
     }
 }
@@ -579,7 +584,7 @@ static void SootopolisGymIcePerStepCallback(u8 taskId)
                 x = data[4];
                 y = data[5];
                 PlaySE(SE_RU_BARI);
-                MapGridSetMetatileIdAt(x, y, 0x20e);
+                MapGridSetMetatileIdAt(x, y, METATILE_ID(SootopolisGym, Ice_Cracked));
                 CurrentMapDrawMetatileAt(x, y);
                 MarkIcePuzzleCoordVisited(x - 7, y - 7);
                 data[1] = 1;
@@ -595,7 +600,7 @@ static void SootopolisGymIcePerStepCallback(u8 taskId)
                 x = data[4];
                 y = data[5];
                 PlaySE(SE_RU_GASYAN);
-                MapGridSetMetatileIdAt(x, y, 0x206);
+                MapGridSetMetatileIdAt(x, y, METATILE_ID(SootopolisGym, Ice_Broken));
                 CurrentMapDrawMetatileAt(x, y);
                 data[1] = 1;
             }
@@ -615,10 +620,10 @@ static void AshGrassPerStepCallback(u8 taskId)
         data[2] = y;
         if (MetatileBehavior_IsAshGrass(MapGridGetMetatileBehaviorAt(x, y)))
         {
-            if (MapGridGetMetatileIdAt(x, y) == 0x20a)
-                StartAshFieldEffect(x, y, 0x212, 4);
+            if (MapGridGetMetatileIdAt(x, y) == METATILE_ID(Fallarbor, AshGrass))
+                StartAshFieldEffect(x, y, METATILE_ID(Fallarbor, NormalGrass), 4);
             else
-                StartAshFieldEffect(x, y, 0x206, 4);
+                StartAshFieldEffect(x, y, 0x206, 4);// unsure what metatile this refers to
 
             if (CheckBagHasItem(ITEM_SOOT_SACK, 1))
             {
@@ -632,7 +637,7 @@ static void AshGrassPerStepCallback(u8 taskId)
 
 static void SetCrackedFloorHoleMetatile(s16 x, s16 y)
 {
-    MapGridSetMetatileIdAt(x, y, MapGridGetMetatileIdAt(x, y) == 0x22f ? 0x206 : 0x237);
+    MapGridSetMetatileIdAt(x, y, MapGridGetMetatileIdAt(x, y) == 0x22f ? 0x206 : 0x237);// again unsure what these are referring to
     CurrentMapDrawMetatileAt(x, y);
 }
 
@@ -687,7 +692,7 @@ static void SetMuddySlopeMetatile(s16 *data, s16 x, s16 y)
 
     MapGridSetMetatileIdAt(x, y, tile);
     CurrentMapDrawMetatileAt(x, y);
-    MapGridSetMetatileIdAt(x, y, 0xe8);
+    MapGridSetMetatileIdAt(x, y, METATILE_ID(General, MuddySlope_Frame0));
 }
 
 static void Task_MuddySlope(u8 taskId)