Effective Against
RawheadElectricity is the known weakness of the rawhead, a child-snatching creature that inhabits dark, damp basements. The rawhead appears to be particularly vulnerable to electrical discharge, which may be related to its tendency to inhabit wet environments that conduct electricity effectively.
In Supernatural
Dean Winchester killed a rawhead in Season 1 by discharging a taser while both he and the creature were standing in water in a flooded basement. The electrical charge killed the rawhead but also stopped Dean's heart, leading to the events of the episode "Faith." This remains the only documented rawhead kill in the show.