How to Reuse Coffee Grounds: 3 No-Waste Hacks That You Have to Try Right Now!

Used coffee grounds can be repurposed as a natural deodorizer in the fridge, a rich fertilizer for plants, and an effective scrub for removing odors from hands. Rich in nitrogen and other minerals, they offer eco-friendly alternatives to chemical products. However, discard them if moldy or overly dry to ensure safety and effectiveness.

By Cookist

Coffee grounds are often quickly discarded after brewing a morning cup, but they have a surprising number of uses that can benefit your home, garden, and even your personal care routine. Here’s why you should think twice before throwing away those used coffee grounds, and how to make the most of their hidden potential.

How to Use Coffee Grounds As a Natural Deodorizer


One of the simplest and most effective uses for spent coffee grounds is as a natural deodorizer. Coffee grounds contain nitrogen, which helps eliminate foul-smelling sulfur gases from the air when combined with carbon. By placing a bowl of dry, used coffee grounds in your refrigerator or freezer, you can neutralize odors effectively. The grounds absorb and eliminate odors, providing a fresher scent. For best results, let the grounds dry out on a baking sheet before transferring them to a bowl; this prevents mold growth and maximizes their odor-absorbing capabilities.

How to Use Coffee Grounds as a Rich Fertilizer for Plants


Coffee grounds are rich in essential minerals for plant growth such as nitrogen, potassium, and magnesium. These nutrients contribute to the overall health of your plants, promoting growth and vitality. Rather than using chemical fertilizers, you can create a natural, nutrient-rich solution by mixing coffee grounds with water. Let this mixture steep overnight, and use it to water your plants. This not only recycles the coffee grounds but also provides your plants with a gentle, organic fertilizer that slowly releases nutrients into the soil, supporting plant growth without the risk of chemical burn.

How to Use Coffee Grounds As A Scrub for All Seasons


Used coffee grounds are an excellent abrasive, making them perfect for scrubbing tasks. After handling pungent ingredients like garlic or onions, coffee grounds can be used to scrub your hands, removing odors naturally. The coarse texture helps to lift the odorous compounds from the skin, while the coffee's own pleasant aroma leaves hands smelling fresh. Coffee grounds can also be mixed with a bit of olive oil or coconut oil for a cost-effective body scrub. This not only exfoliates the skin but also adds moisture, thanks to the natural oils.

When to Dispose of Coffee Grounds

Despite their versatility, there are times when coffee grounds should be disposed of rather than reused. If you notice mold growing on your coffee grounds, it’s best to throw them away to avoid potential health risks. Additionally, if the grounds have been sitting out and drying for an extended period, they may lose many of the properties that make them useful for the applications mentioned. In these cases, it's safer and more hygienic to discard them and start fresh with a new batch.

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