diff --git a/code/ATMOSPHERICS/mainspipe.dm b/code/ATMOSPHERICS/mainspipe.dm
index 631f3530a24..2c0a7989533 100644
--- a/code/ATMOSPHERICS/mainspipe.dm
+++ b/code/ATMOSPHERICS/mainspipe.dm
@@ -37,7 +37,7 @@ obj/machinery/atmospherics/mains_pipe
 	layer = 2.4 //under wires with their 2.5
 
 	force = 20
-	
+
 	var/volume = 0
 
 	var/alert_pressure = 80*ONE_ATMOSPHERE
@@ -99,9 +99,9 @@ obj/machinery/atmospherics/mains_pipe
 		for(var/obj/machinery/atmospherics/pipe/mains_component/node in nodes)
 			node.disconnect()
 
-	Del()
+	Destroy()
 		disconnect()
-		..()
+		return ..()
 
 	initialize()
 		for(var/i = 1 to nodes.len)
diff --git a/code/game/objects/items/devices/PDA/PDA.dm b/code/game/objects/items/devices/PDA/PDA.dm
index c0a5bce63b2..667c37c882f 100755
--- a/code/game/objects/items/devices/PDA/PDA.dm
+++ b/code/game/objects/items/devices/PDA/PDA.dm
@@ -812,73 +812,6 @@ var/global/list/obj/item/device/pda/PDAs = list()
 
 	return 1 // return 1 tells it to refresh the UI in NanoUI
 
-
-/obj/item/device/pda/proc/detonate_act(var/obj/item/device/pda/P)
-	//TODO: sometimes these attacks show up on the message server
-	var/i = rand(1,100)
-	var/j = rand(0,1) //Possibility of losing the PDA after the detonation
-	var/message = ""
-	var/mob/living/M = null
-	if(ismob(P.loc))
-		M = P.loc
-
-	//switch(i) //Yes, the overlapping cases are intended.
-	if(i<=10) //The traditional explosion
-		P.explode()
-		j=1
-		message += "Your [P] suddenly explodes!"
-	if(i>=10 && i<= 20) //The PDA burns a hole in the holder.
-		j=1
-		if(M && isliving(M))
-			M.apply_damage( rand(30,60) , BURN)
-		message += "You feel a searing heat! Your [P] is burning!"
-	if(i>=20 && i<=25) //EMP
-		empulse(P.loc, 3, 6, 1)
-		message += "Your [P] emits a wave of electromagnetic energy!"
-	if(i>=25 && i<=40) //Smoke
-		var/datum/effect/effect/system/harmless_smoke_spread/S = new /datum/effect/effect/system/harmless_smoke_spread //Why was this chem_smoke_spread when there are no chems involved?
-		S.attach(P.loc)
-		S.set_up(P, 10, 0, P.loc)
-		playsound(P.loc, 'sound/effects/smoke.ogg', 50, 1, -3)
-		S.start()
-		message += "Large clouds of smoke billow forth from your [P]!"
-	if(i>=40 && i<=45) //Bad smoke
-		var/datum/effect/effect/system/bad_smoke_spread/B = new /datum/effect/effect/system/bad_smoke_spread
-		B.attach(P.loc)
-		B.set_up(P, 10, 0, P.loc)
-		playsound(P.loc, 'sound/effects/smoke.ogg', 50, 1, -3)
-		B.start()
-		message += "Large clouds of noxious smoke billow forth from your [P]!"
-	if(i>=65 && i<=75) //Weaken
-		if(M && isliving(M))
-			M.apply_effects(0,1)
-		message += "Your [P] flashes with a blinding white light! You feel weaker."
-	if(i>=75 && i<=85) //Stun and stutter
-		if(M && isliving(M))
-			M.apply_effects(1,0,0,0,1)
-		message += "Your [P] flashes with a blinding white light! You feel weaker."
-	if(i>=85) //Sparks
-		var/datum/effect/effect/system/spark_spread/s = new /datum/effect/effect/system/spark_spread
-		s.set_up(2, 1, P.loc)
-		s.start()
-		message += "Your [P] begins to spark violently!"
-	if(i>45 && i<65 && prob(50)) //Nothing happens
-		message += "Your [P] bleeps loudly."
-		j = prob(10)
-
-	if(j) //This kills the PDA
-		P.Del()
-		if(message)
-			message += "It melts in a puddle of plastic."
-		else
-			message += "Your [P] shatters in a thousand pieces!"
-
-	JFLOG("[M]'s PDA Detonated >>> [message]")
-
-	if(M && isliving(M))
-		message = "\red" + message
-		M.show_message(message, 1)
-
 /obj/item/device/pda/proc/remove_id()
 	if (id)
 		if (ismob(loc))
diff --git a/code/game/turfs/simulated/walls.dm b/code/game/turfs/simulated/walls.dm
index 1ffea6a4d93..8771ce02bd4 100644
--- a/code/game/turfs/simulated/walls.dm
+++ b/code/game/turfs/simulated/walls.dm
@@ -34,7 +34,9 @@
 
 
 /turf/simulated/wall/Del()
-	for(var/obj/effect/E in src) if(E.name == "Wallrot") del E
+	for(var/obj/effect/E in src)
+		if(E.name == "Wallrot")
+			qdel(E)
 
 /turf/simulated/wall/ChangeTurf(var/newtype)
 	for(var/obj/effect/E in src) if(E.name == "Wallrot") del E
diff --git a/code/modules/mob/living/silicon/ai/ai.dm b/code/modules/mob/living/silicon/ai/ai.dm
index 5324628ef90..63573fb70b0 100644
--- a/code/modules/mob/living/silicon/ai/ai.dm
+++ b/code/modules/mob/living/silicon/ai/ai.dm
@@ -243,7 +243,7 @@ var/list/ai_verbs_default = list(
 /obj/machinery/ai_powersupply/New(var/mob/living/silicon/ai/ai=null)
 	powered_ai = ai
 	if(isnull(powered_ai))
-		Del()
+		qdel(src)
 
 	loc = powered_ai.loc
 	use_power(1) // Just incase we need to wake up the power system.
@@ -252,7 +252,7 @@ var/list/ai_verbs_default = list(
 
 /obj/machinery/ai_powersupply/process()
 	if(!powered_ai || powered_ai.stat & DEAD)
-		Del()
+		qdel(src)
 	if(!powered_ai.anchored)
 		loc = powered_ai.loc
 		use_power = 0