FOR ELECTRONIC BUG KILLERS / " BUG ZAPPER ". BUG ZAPPER BULB. BLACK LIGHT BLUE, ALSO KNOWN AS TRIPPY AND HIPPIE BLACKLIGHT - THAT TYPE OF BULB LOOKS BLACKISH BLUE WHEN UNLIT. THE OTHER TYPE OF BLACKLIGHT BULB USED IN BUG KILLERS LOOKS WHITE UNLIT, AND LOOKS ELECTRIC BLUE WHEN LIT.
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