That hot, freshly-brewed pot of coffee you enjoy each morning leaves behind a basket of used coffee grounds. They are seemingly useless once the flavor has been extracted from them via brewing, but far from being useless. Coffee grounds can be used for several things, including deodorizing, fertilizing and killing cockroaches.
Allow a cup of used coffee grounds to dry out, then place them in your refrigerator or freezer to neutralize odors and prevent ice cream from developing that ‘funny’ taste.
Used coffee grounds are a good source of nitrogen and will give plants a growing boost. Sprinkle coffee grounds on top of soil around plants, or place the used grounds in the watering can before watering plants. Add grounds to compost pile also.
Create Blue Hydrangeas
Coffee grounds can change the color of your pink or purple hydrangeas to a unique shade of blue. Work two cupfuls of coffee grounds into the soil around the base of a mophead hydrangea to increase the acidity level of the soil. The increased acidity enables the hydrangea to absorb more aluminum from the soil and turns (or keeps) the blooms a vibrant shade of blue.
Line the inside perimeter of a clean tuna fish or cat food can with double-sided tape. Place a couple of spoons full of moistened coffee grounds in the center of the can and place can where cockroaches have been seen. The aroma of coffee grounds is irresistible to the cockroaches and when they try to get to them, they will become trapped by the sticky tape and die.
Garden Insect Repellent
Create an inch-high ring of used coffee grounds around the base of garden plants to repel ground-creeping pests like ants, snails and slugs. The used grounds will also improve garden soil quality as they decompose.
Use a spoonful of grounds to clean garden dirt off of hands and remove fish and garlic odors. The rough texture also exfoliates skin to leave hands feeling softer and smoother.
Anything that needs scrubbing to remove stuck on dirt and debris can be scrubbed with coffee grounds. Place coffee grounds on a cloth and scrub everything from dishware to garden tools.
Cover Furniture Scratches
Scratches on dark wood furniture can be hidden by adding a little hot water to a cupful of grounds and allowing to steep for 10 minutes. Dip a cotton swab in the strong-colored brew, then dab onto wood scratches.
Create Antique Paper
Pour a cup of used coffee grounds and a cup of warm water in a 9 x 13 baking dish. Let steep for a few minutes, then add paper to the dark-colored water and let set for one minute. Remove paper and air dry. The end result will look like antique paper.
To keep ashes contained when cleaning out the fireplace of wood heater, sprinkle wet coffee grounds on top of the ashes. This keeps down the airborne dust as you clean out the ashes.