Not only is peppermint oil a natural cockroach repellent—it's also toxic to roaches (and for the record, to bed bugs, too). The same Auburn University study found that mint oil killed both German and American cockroaches when they came into contact with it for an extended period.
You may love the smell of fresh citrus, but cockroaches hate the scent. That means you can use citrus scented cleaners in your kitchen and bathroom to chase any lingering roaches away. You can also keep a few citrus peels around your home in strategic places.
Smells that roaches hate: a quickfire summary
Oregano, rosemary, mint, eucalyptus, lemongrass and catnip are great herby options. Citrus oils work brilliantly too. And surprisingly, lower concentrations – 2.5 parts per hundred – seem to work best as deterrents. Just don't bother with lavender.
Eucalyptus oil has a strong scent that seems to have some success in repelling roaches. You can dilute it with water and spray areas you think cockroaches might have nested.
What Makes Peppermint Oil Toxic to Insects? Research shows that menthone (which is a compound similar to menthol) is the ingredient that makes peppermint oil a potential roach killer. Menthone is the compound that gives mint oil its “minty” fragrance and it's present in the oils of most common mint plants.
Peppermint oil has been used for decades as a potent cockroach repellent and killer. Studies confirm peppermint's incredible insect control capabilities.
Mint. The strong fragrance of mint is disliked by roaches, and they stay away from this aromatic herb. Mint also repel aphids, fleas, beetles, and moths.
Mint. Mint is yet another fragrant herb that has pest-fighting properties. According to the Cornell Cooperative Extension, menthol, the active insect-fighting ingredient in mint and peppermint oil, has biocidal properties that help repel and control mites, mosquitoes and various other pests.
Cockroaches are attracted to your home by the smell of food. They are most attracted to starch, sugar, grease, meat, and cheese. Rotting fruits and vegetables can also give off a very pungent smell that will definitely attract these pests.
Home remedies like diatomaceous earth, baking soda, boric acid, citrus, essential oils, and borax can be effective ways to get rid of roaches. If you want to take a more aggressive approach to eliminate roaches, glue traps, bait stations, and liquid roach deterrent concentrates are all excellent options.
The most popular and effective natural cockroach killer is diatomaceous earth. It is non-toxic to humans and kills roaches when they come into contact with it. Sprinkle the diatomaceous earth around areas where roaches travel and frequent.
Lemon contains limonene, which does in fact repel cockroaches.
Keep a Cold Home
Turning up the AC may not look good on your energy bill but at least your house will be cockroach-free. There's a reason why we see roaches in the summer, and they vanish during the winter – cockroaches hate the cold. Always turn up the AC.
Alternatively, let the lavender steep without heat for two days. Strain the lavender out of the mixture, let it cool and put the lavender water into a spray bottle. According to the hack, just spray this where you see roaches and it should repel the nasty bugs from your home.
The scent of mint repels aphids, cabbage moths, flea beetles, squash bugs, whiteflies, and even ants. To prevent this aggressive grower from taking over your vegetable garden, you can simply lay sprigs of mint among the plants you want to protect, but the sprigs must be replaced often.
Distilled vinegar does not kill or repel roaches, making it completely ineffective. Distilled vinegar will help keep your kitchen clean, giving cockroaches less to snack on. However, roaches can live for months at a time without any food at all, and they will eat almost anything to survive.
White vinegar is often recommended as a natural way to get rid of roaches. Unfortunately, it doesn't actually kill these problem insects. It's more of a cleaning tool than anything else, and it won't actually help eliminate your roach problem.
Cockroaches seek places where they can find ample food. Food crumbs, spills, leftovers, and pet food are the most common food sources. Kitchen trash and grease on stovetops and countertops can be inviting for roaches, and they may also get into stored food items.
The best way to get rid of roaches fast is to sanitize your home, eliminate hiding spots and stagnant water, store food in airtight containers, and use glue strips, bait, boric acid, or liquid concentrates.
Baking soda can kill roaches, but in order to do so the roaches have to eat the baking soda mixture, and once they consume water the baking soda reacts with the water creating gas in their stomachs, which kills them.
4–5 years: Blue Tansy, Cedarwood, Peppermint, Wintergreen, and Ylang Ylang.
You may enjoy adding herbs to your dishes, but some bugs can't stand the smell of them. Rosemary, thyme, basil, and mint have scents that bugs dislike. Mosquitoes, cockroaches, and stinging insects try to avoid these herbs.