Use coffee grounds around the house
Before you toss coffee grounds, consider these other uses from This Old House:
Thanks to its nitrogen, coffee grounds are an ideal fertilizer for plants like hydrangeas that need acidic soil.
Keep ants at bay by sprinkling grounds at likely entry points, such as along windowsills and under doors.
Coffee grounds are a natural deodorizer. Place some anywhere you’d like to absorb unpleasant odors, such as in the freezer, fridge or even inside your gym shoes.