diff --git a/code/modules/mining/minebot.dm b/code/modules/mining/minebot.dm
index 889f2012d1e..0f11bd0e665 100644
--- a/code/modules/mining/minebot.dm
+++ b/code/modules/mining/minebot.dm
@@ -59,6 +59,10 @@
 
 	SetCollectBehavior()
 
+/mob/living/simple_animal/hostile/mining_drone/Destroy()
+	QDEL_NULL(stored_gun)
+	return ..()
+
 /mob/living/simple_animal/hostile/mining_drone/emp_act(severity)
 	adjustHealth(100 / severity)
 	to_chat(src, "<span class='userdanger'>NOTICE: EMP detected, systems damaged!</span>")
diff --git a/code/modules/mob/living/simple_animal/hostile/terror_spiders/terror_spiders.dm b/code/modules/mob/living/simple_animal/hostile/terror_spiders/terror_spiders.dm
index eed323d9ebe..d910903c009 100644
--- a/code/modules/mob/living/simple_animal/hostile/terror_spiders/terror_spiders.dm
+++ b/code/modules/mob/living/simple_animal/hostile/terror_spiders/terror_spiders.dm
@@ -312,6 +312,8 @@ GLOBAL_LIST_EMPTY(ts_spiderling_list)
 
 /mob/living/simple_animal/hostile/poison/terror_spider/Destroy()
 	GLOB.ts_spiderlist -= src
+	var/datum/atom_hud/U = GLOB.huds[DATA_HUD_MEDICAL_ADVANCED]
+	U.remove_hud_from(src)
 	handle_dying()
 	return ..()
 
diff --git a/code/modules/mob/living/simple_animal/simple_animal.dm b/code/modules/mob/living/simple_animal/simple_animal.dm
index 7a34f746728..356cca68b25 100644
--- a/code/modules/mob/living/simple_animal/simple_animal.dm
+++ b/code/modules/mob/living/simple_animal/simple_animal.dm
@@ -140,6 +140,7 @@
 	if (T && AIStatus == AI_Z_OFF)
 		SSidlenpcpool.idle_mobs_by_zlevel[T.z] -= src
 
+	QDEL_LIST(actions)
 	return ..()
 
 /mob/living/simple_animal/handle_atom_del(atom/A)
diff --git a/code/modules/mob/mob.dm b/code/modules/mob/mob.dm
index 9d4a22b73cc..87c133b89b3 100644
--- a/code/modules/mob/mob.dm
+++ b/code/modules/mob/mob.dm
@@ -20,6 +20,7 @@
 			AA.viewers -= src
 		viewing_alternate_appearances = null
 	LAssailant = null
+	runechat_msg_location = null
 	return ..()
 
 /mob/Initialize(mapload)