
Notes
After completing the quest Smoking Kills, you can go into the well to fight various slayer monsters (assuming you have the requirements to fight them).
Charm Drop Rates 
Tactics
You need your Masked earmuffs to fight Mighty banshees, or any other slayer monsters in the well. Their attacks are Magical-melee like bloodvelds, so wear armour with a high magic defence as if you were fighting bloodvelds. There are also numerous ranging spots in the area; the most effective one is in the south-west corner of the area with three Mighty Banshees. You can also use a halberd on them from that spot; it makes for easier slayer xp.
Examine
Not the best of vocalists.
Top Drops
Clue scroll (level-3), Champion scroll
Drops
Coins (195), Grimy herbs, Banshee voice, Mithril mace, noted Pure essence (23-29), Adamant dagger, Chaos rune (17-23), Cosmic rune (12), Air rune (43), Fire rune (70), Fishing bait (15), Black mystic gloves, Crimson charm, Green charm, Gold charm, Blue charm, Adamantite ore, Adamant kiteshield, noted Eye of newt (10), Nature talisman, Rune javelin (5)