Gardening experts at WWNursery have recommended a simple, natural method to repel insects this summer: mixing coffee grounds with bicarbonate of soda in a bowl and placing it on patios or windowsills. The combination acts as an effective pest deterrent and odour neutraliser, according to the experts.
How the Mixture Works
Leftover coffee grounds have a granular texture that absorbs smells, while bicarbonate of soda is known for its neutralising power. The nitrogen in coffee helps neutralise odours rather than simply covering them up, similar to baking soda but with a milder coffee scent, according to experts at TheKitchn. Most insects, including spiders, mosquitoes, wasps, and bees, have a strong sense of smell and dislike the potent aroma of coffee grounds.
Multiple Uses Around the Home
Households can use the mixture for various purposes: place it in the fridge, bin, or car to neutralise odours, or keep it on the patio or windowsills to deter pests. The US Department of Agriculture suggests sprinkling fresh coffee grounds or baking soda loosely in a large, shallow container at the bottom of the refrigerator and freezer to absorb food smells. TheKitchn experts also recommend using the mixture near litter boxes and pet areas.
Preparation Steps
To prepare the natural solution, follow these steps: First, place used coffee grounds on a plate or baking sheet to dry completely, as wet coffee can quickly become mouldy. Once dry, transfer the grounds to a bowl or small container, add two or three spoons of bicarbonate of soda, and mix well. Finally, place the bowl wherever odour or pest control is needed.
Expert Endorsement
The gardeners at WWNursery stated: 'As unlikely as it sounds, the solution is coffee grounds! Coffee grounds are a safe and effective way to keep pests away. Coffee grounds can help repel not only mosquitoes but also other annoying insects like wasps and bees.' TheKitchn experts added: 'The grounds naturally absorb all kinds of funky smells and leave behind a very light coffee aroma.'
