Over 2.25 billion cups of coffee are consumed all over the world each day. This results in coffee grounds piling up in kitchens, offices, and cafes. An estimated 6 million tons of coffee grounds are made annually, and 99 percent of that waste is destined for landfills. However, as coffee consumption skyrockets, this becomes a major ecological issue.
Don’t toss out that leftover brew just yet. Coffee grounds are not as useless as you might have thought. Used coffee grounds are packed full of nutrients, oils, and natural properties that can be utilized for a number of different uses, such as nourishing plants and rejuvenating the skin. Read on to discover 18 ways to repurpose your morning brew.
Fertilizer for Plants
Nitrogen, phosphorus, and potassium are essential elements for growing plants, and coffee grounds are rich in all three, according to the National Gardening Association. These are especially good for acid-loving plants like roses, blueberries, and azaleas.
Compost can be improved by adding coffee grounds, which helps improve soil structure, water retention, and microbial activity, leading to healthier plants.
Pest Repellent
Coffee grounds are considered a natural alternative to chemical repellents, as a PLOS ONE study highlights that they possess insecticidal properties. It is explained that the compounds such as caffeine and diterpenes along with the strong scent keep pests like ants, mosquitoes and slugs away.
This quality thus makes coffee grounds an ecofriendly choice for gardeners whose aim is to protect their plants without resorting to toxic pesticides.
Natural Scrub
Coffee grounds’ coarse texture, make them suitable to be used as abrasive cleaners to scrub surfaces. You can use them to scrub grime and grease from kitchen countertops, stainless steel, or the inside of ovens.
Coffee grounds make great, non-toxic scrubs with the added bonus of a fresh coffee scent.
Deodorize the Fridge
According to a study published in the Journal of Agricultural and Food Chemistry, coffee grounds naturally absorb odors. This makes them a more natural and less pricey alternative to store-bought air fresheners.
The grounds work by trapping and neutralizing bad smells, so your fridge will stay smelling fresh. Using a simple bowl of dried coffee grounds, you can deodorize your fridge quite effectively—even if it has spoiled food or musty odors.
Exfoliating Body Scrub
Since the coffee grounds are gritty, they provide great exfoliation, removing dead cells and increasing circulation. Coffee is also believed to tighten skin and improve the appearance of cellulite, so it’s a popular DIY beauty treatment ingredient.
This is a natural, biodegradable alternative to synthetic exfoliation that may be detrimental to the environment.
DIY Candles
Adding used coffee grounds to the homemade candle can add texture and create a subtle coffee scent. The natural oils in their grounds give fragrance, and when mixed with melted wax, they create an appealing speckled effect.
Coffee-scented candles are great for home decoration, and the coffee scent is believed to enhance mood and focus.
Homemade Soap
Coffee grounds can be used as an exfoliant in homemade soap to help gently scrape away dead skin, leaving behind a pleasant scent. Their natural, earthy aroma, when combined with oils like coconut or olive oil, creates a moisturizing soap.
Besides, coffee contains antioxidants that shield the skin from those harmful free radicals.
Furniture Polish
You can mix used coffee grounds with olive oil or vinegar to make a natural polish for wooden furniture. The natural oils from the grounds moisturize the wood, while the fine particles help polish the dullness.
This is a natural alternative to harsh chemicals that you find in the traditional furniture polishes, making it environment safe and safe for your home as well.
Deicing Agent
Traditional rock salt becomes a major concern in areas where it might damage plants, harm pets, or threaten the surrounding environment. This is where coffee grounds step in as eco-friendly and effective deicer.
The fact that coffee grounds have a coarse texture helps give traction on icy surfaces, preventing slipping easily. Coffee grounds also contain compounds that make snow and ice more acidic and speed up the melting process.
Cleaning Your Grill
Whenever you have greasy grills, coffee grounds are a great abrasive for cleaning them. Sprinkled over a damp cloth, they can be used to scrub away grease and grime from these surfaces without scratching them.
Beyond that, the natural oils in the grounds also help to wipe off tough food residue, leaving your grill sparkling. Cleaning with coffee grounds decreases exposure to synthetic cleaning chemicals.
Natural Dye
Coffee grounds can be used to make a natural dye for fabric and paper. Coffee produces a deep, rich brown that’s perfect for vintage-style designs or to add a rustic touch to crafts.
Coffee dye is an eco-friendly alternative to chemical dyes, which can dirty water systems.
Boost Compost
Coffee grounds are one of the best organic waste materials for composting because they are so nutrient-dense, says Cornell University’s Waste Management Institute. The carbon-rich materials, leaves, and straw, are balanced by their nitrogen content.
Adding coffee grounds to it helps increase the decomposition process, thus making richer, healthier compost. Plus, they encourage the growth of good microorganisms that enhance healthy soil.
Hair Treatment
Coffee grounds can help promote scalp health while encouraging hair growth. They remove dead skin cells and unclog hair follicles, thus improving hair growth. Their antioxidants stimulate hair follicles and prevent hair loss.
According to a 2007 study in the International Journal of Dermatology, caffeine promotes hair follicle growth and stimulates the scalp. It can also block the effects of DHT (dihydrotestosterone), a hormone connected to hair loss.
Wart Remover
Coffee grounds are a natural remedy for warts. Some people spread a paste of coffee grounds with coconut oil on the affected area; the coarse texture works as an exfoliant, and the antioxidants from the coffee speed healing.
However, scientific research on this application is limited, and it makes more sense to consider it a home remedy rather than a medically proven treatment.
Odor Absorber in Shoes
Placing used coffee grounds inside shoes or socks will absorb unwanted odors. Shoes often trap moisture, which makes them have bad smells. The grounds have odor-neutralizing properties.
Coffee grounds are eco-friendly and nontoxic chemical deodorizers, absorbing odors rather than masking them.
Repel Cats
Coffee grounds are a good deterrent for cats – sprinkle them around garden beds or flowerpots to stop them from digging and leaving waste. Cats hate the strong smell of coffee and will avoid coming into your garden.
The texture of the grounds makes it uncomfortable for cats to walk on them, too.
Grow Mushrooms
Some types of mushrooms, like oyster mushrooms, can be grown on coffee grounds. The grounds’ rich nutrients make them ideal for mushroom cultivation.
In addition to being a fantastic method of recycling coffee grounds, this strategy can also be a sustainable source of food.
Polishing and Cleaning Metal
Coffee grounds make an excellent and natural alternative for cleaning and polishing brass, silver, or copper. Their coarse texture makes them abrasive enough to remove tarnish, grime, and oxidation without scratching or damaging the delicate surfaces.
The natural oils and acids in the coffee grounds help break down tarnish and return shine.
Disclaimer – This list is solely the author’s opinion based on research and publicly available information.
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