[READY]Component Forensics and Item Blood OverlayS!

code/modules/mob/living/simple_animal/bot/mulebot.dm

@@ -472,8 +472,7 @@
 				if(isturf(next))
 					if(bloodiness)
 						var/obj/effect/decal/cleanable/blood/tracks/B = new(loc)
-						if(blood_DNA && blood_DNA.len)
-							B.blood_DNA |= blood_DNA.Copy()
+						B.add_blood_DNA(return_blood_DNA())
 						var/newdir = get_dir(next, loc)
 						if(newdir == dir)
 							B.setDir(newdir)
@@ -655,8 +654,7 @@
 	T.add_mob_blood(H)
 
 	var/list/blood_dna = H.get_blood_dna_list()
-	if(blood_dna)
-		transfer_blood_dna(blood_dna)
+	add_blood_DNA(blood_dna)
 	bloodiness += 4
 
 // player on mulebot attempted to move