Roaches are repelled by ground coffee. In fact, putting some ground coffee down in the corners or windowsills of your kitchen can actually help keep them insects away.
Peppermint oil, cedarwood oil, and cypress oil are essential oils that effectively keep cockroaches at bay. Additionally, these insects hate the smell of crushed bay leaves and steer clear of coffee grounds. If you want to try a natural way to kill them, combine powdered sugar and boric acid.
Cockroaches have an incredible sense of smell that they use to find food. You can take advantage of this fact by using scents they dislike such as thyme, citrus, basil, mint, and citronella to repel them from your home.
The best way to keep cockroaches away permanently is to make the home less inviting. Make sure to keep the home clean, clean up food messes, take out trash at the end of the day, seal any cracks or gaps around windows, doors and the foundation, and fix any issue that might lead to high moisture content within the home.
Boric acid Some people find this to be the best option to kill roaches. Boric acid can work too, the only downside is that sometimes roaches will go away as soon as they smell boric acid.
Do Used Coffee Grounds Keep Rodents Away? The answer to this question is yes, use coffee grounds as a natural rodent repellent. The coffee's bitter compounds are unpleasant to rats and mice. They will avoid areas where there is a coffee scent or use.
Adding coffee grounds directly to the soil as a fertiliser can be a good option. Coffee grounds are rich in nutrients, especially nitrogen. They also have some amount of other nutrients like potassium and phosphorous. Overall, this means that adding coffee grounds to your garden can work fairly well as a fertiliser.
Other Natural Repellents
Mothballs — place them around the perimeter, and their pungent smell will repel snakes. Vinegar — mix it with water and spray often. Caffeine — sprinkle coffee grounds or instant coffee granules. Spices — chili powder and cayenne pepper work the best.
Why coffee grounds? Since the bears have a strong sense of smell, such a pungent treat is extremely attractive and stimulating to them. The bears roll around in coffee grounds like a cat in catnip!
When caffeine is contained within its natural plant form, caffeine works like a natural pesticide, as it causes an herbivorous insects' nervous system to stop producing essential enzymes. When these enzymes are inhibited in an insect, paralysis and eventual death result.
Not only will it taste terrible, but mostly because burnt coffee contains a chemical called acrylamide, which is a known carcinogen. As a general rule, it's best to avoid burnt coffee. In addition, it can have adverse effects on your nervous system when consumed in large quantities.
Borax and Sugar. Combining borax and sugar is a very effective combination that kills off roaches. The right combination is about three parts borax to one part sugar. Once you combine the two ingredients, sprinkle it around your home to keep the roaches at bay.
It's a fact that cockroaches are afraid of humans and other mammals or animals that are bigger than them. They see us as predators and that fear triggers their instinct to scatter away. However, they dislike strong and distinctive scents such as citrus, peppermint, lavender and vinegar.
'Your roses, azaleas, lilies, and hollies because they are acid-loving plants that will thrive best in the acidic characteristic of coffee grounds,' he adds.
'Coffee grounds are an excellent houseplant fertilizer due to their high nitrogen content (about 2 per cent) that releases slowly into the potting media as they decompose.
The safest way to use coffee grounds in the garden is to add them to compost containers or worm bins. Used grounds compost well, and home-made compost is superb for improving soil and growing healthy plants.
Not only do coffee grounds smell good, but they also work wonders when it comes to warding off unwelcome guests such as spiders.
You may love your morning coffee, but ants could do without it. Another natural way to deter ants, sprinkle coffee grounds outside and around your garden. The smell repels them and they'll be looking for a less caffeinated place to hang out. Want to keep your home clean and clear of ants?
Since coffee grounds have such a pungent and intense smell, mosquitoes do not like to come near it. Mosquitoes are repulsed by all types of coffee, whether it is fresh, used, or burnt. The most effective way to use coffee grounds for mosquito control is by burning them, as it creates a stronger aroma.
Good old-fashioned soap and water is a safe, reliable, and inexpensive method. Create a soapy water solution that you can spray with a bottle. It will only take about 2 – 3 sprays to kill any roaches, as the soapy solution will cover their breathing pores and suffocate them.