World Of Warcraft Classic Investigate the Alchemist Shop , easy and works!

See few low level mages stuck on this quest. Well here is a easy way , When on the quest and you are at the location instead of using the item from the quest use a AOE spell like arcane explosion as this will pop the enemies one at a time. It can also pop more then one if you get to close to the NPC but if you do that just reset the mobs, Anyway it shows this on the video. This is for classic and is current so it works!