* [[4.02 Are You There, God? It's Me, Dean Winchester]] - [[Bobby's Panic Room]], first shown in this episode, is made of iron walls coated with [[Salt]] and has an iron [[Devil's Trap]] over the light source and fan in the ceiling.
* [[4.06 Yellow Fever]] - Sam and Bobby use an iron chain etched with spell work to trap and drag a [[buruburu]] behind the [[Impala]].
* [[5.10 Abandon All Hope...]] - Sam, Dean, and [[Ellen]] build a bomb from propane, salt, and iron nails at [[Jo]]'s insistence to destroy the hellhounds surrounding them.
* [[6.09 Clap Your Hands If You Believe]] - Sam shoots the [[Leprechaun]] with iron buckshot, weakening him.
* [[6.18 Frontierland]] - The [[phoenix]] was unable to escape from the jail or handcuffs because they were made of iron.
Sam and Dean feel cold iron is the best way to repel a spirit.<ref>[[BoM]]</ref> They usually employ fireplace pokers, and on at least one occasion a wrench.<ref name="four17">[[4.17 It's A a Terrible Life]]</ref> Their [[hunters|hunting]] relatives also made use of iron. A house belonging to the Campbells, [[Mary]]'s family, was outfitted with iron fixtures.<ref name="five13">[[5.13 The Song Remains The the Same]]</ref> [[John]] owned an iron axe that is eventually used by Sam to behead [[Leshii]].<ref name="five05">[[5.05 Fallen Idols]]</ref>
Sam and Dean gain firsthand knowledge of the effect of iron on spirits when they astral project with the assistance of [[Pamela Barnes]] in [[4.15 Death Takes A a Holiday]]. They find themselves trapped when a demon, despite being burned by the metal itself, encircles them with an iron chain.
==Wrought Iron Lore==