diff --git a/code/game/objects/effects/decals/cleanable.dm b/code/game/objects/effects/decals/cleanable.dm
index 752d4b784ab..15b8ca546af 100644
--- a/code/game/objects/effects/decals/cleanable.dm
+++ b/code/game/objects/effects/decals/cleanable.dm
@@ -23,11 +23,18 @@
 /// Use this if your decal is one of one, and thus we should not spawn it if it's there already
 /// Returns either the existing cleanable, the one we created, or null if we can't spawn on that turf
 /turf/proc/spawn_unique_cleanable(obj/effect/decal/cleanable/cleanable_type)
+	var/turf/checkturf = src
+	while (isgroundlessturf(checkturf) && checkturf.zPassOut(DOWN))
+		var/turf/below = GET_TURF_BELOW(checkturf)
+		if (!below || !below.zPassIn(DOWN))
+			break
+		checkturf = below
+
 	// There is no need to spam unique cleanables, they don't stack and it just chews cpu
-	var/obj/effect/decal/cleanable/existing = locate(cleanable_type) in src
+	var/obj/effect/decal/cleanable/existing = locate(cleanable_type) in checkturf
 	if(existing)
 		return existing
-	return new cleanable_type(src)
+	return new cleanable_type(checkturf)
 
 /obj/effect/decal/cleanable/Initialize(mapload, list/datum/disease/diseases)
 	. = ..()
diff --git a/code/game/objects/effects/decals/decal.dm b/code/game/objects/effects/decals/decal.dm
index 646713a21d7..e5fce2731fb 100644
--- a/code/game/objects/effects/decals/decal.dm
+++ b/code/game/objects/effects/decals/decal.dm
@@ -15,6 +15,8 @@
 	var/static/list/loc_connections = list(
 		COMSIG_TURF_CHANGE = PROC_REF(on_decal_move),
 	)
+	while(isopenspaceturf(loc) && can_z_move(DOWN, z_move_flags = ZMOVE_ALLOW_ANCHORED))
+		zMove(DOWN, z_move_flags = ZMOVE_ALLOW_ANCHORED)
 	AddElement(/datum/element/connect_loc, loc_connections)
 
 /obj/effect/decal/blob_act(obj/structure/blob/B)
diff --git a/code/modules/reagents/chemistry/reagents/other_reagents.dm b/code/modules/reagents/chemistry/reagents/other_reagents.dm
index ef5dd8d0a85..404840175a5 100644
--- a/code/modules/reagents/chemistry/reagents/other_reagents.dm
+++ b/code/modules/reagents/chemistry/reagents/other_reagents.dm
@@ -3089,7 +3089,7 @@
 
 /datum/reagent/ants/expose_turf(turf/exposed_turf, reac_volume)
 	. = ..()
-	if(!istype(exposed_turf) || isspaceturf(exposed_turf)) // Is the turf valid
+	if(!istype(exposed_turf)) // Is the turf valid
 		return
 	if((reac_volume <= 10)) // Makes sure people don't duplicate ants.
 		return