Coffee Grounds Used to Drive Fire Ants Out of Airport Runway
Coffee grounds go stale fast. They may not be useful for a good cup of coffee, but can still have other uses. So, perhaps don't toss away your spare coffee grounds yet.
One use of coffee grounds is to drive fire ants out of your way.
This is at least what one airport is doing.
The Charlotte Douglas International Airport is using Starbucks coffee grounds of their 6 coffee serving locations to kill fire ants, mostly at runway lights.
They started doing it after Googling possible uses of used coffee grounds.
They are saving about $755 a year on expanses of taking the coffee grounds to the landfill, by recycling an average of 2,200 pounds of coffee grounds per week in the winter, and 800 a week in the summer.
Yet more uses of coffee:Coffee car fueled by coffee groundUses of coffee grounds: soaking hair, scaring off pests and removing odors