bat guano

Cavern floor waste

Bat guano is the accumulated excrement of bats, historically valued as a potent fertilizer due to its high nitrogen and phosphate content.

It was once so commercially important that nations fought over guano-rich islands.

The term sometimes appears in the expression batshit crazy or simply batshit, an intensifier suggesting extreme irrationality, though guano itself sounds more refined than its cruder synonym.

Opposites
origin/source

bat guanochicken manure

Fowl excrement used as fertilizer

pigeon droppings · cow manure · horse manure

fertilizer value/agricultural use

bat guanosynthetic fertilizer

Chemically produced crop nutrients

chemical fertilizer · ammonium nitrate

SUBSTANCE TYPE (valuable vs. worthless waste)

bat guanosewage sludge

Solid wastewater treatment residue

sewage · landfill waste · toxic waste · garbage

Family

bat, guano

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Negative · Everyday, not technical · Rated G