Design & DIY 5 unusual uses for coffee grounds By Cottage Life Published: June 29, 2016 Updated: February 20, 2025 share Share on Facebook Share on Twitter Share on Pinterest Copy Link Cancel Few moments can top that first sip of coffee on a cool, misty morning at the lake. And beyond the obvious benefits of coffee, those used grounds make an excellent nitrogen source for your compost heap. But did you know that you can also use grounds for everything from exfoliation to pest control? Related Story 5 coffee facts you shouldn’t believe (and one you should) Related Story 13 reasons why coffee is awesome