Some strong scents, such as lavender and mint, have been known to repel cockroaches.
Citronella: Not just the mosquitoes, even cockroaches find it hard to stay around a place that smells of citronella.
Cockroaches hate the smell of peppermint, lavender, eucalyptus, and tea tree oils? That is because it disrupts and masks the scent trails which cockroaches use to hunt for their food. Roaches die when they are exposed to higher concentrations of essential oils, particularly peppermint oil.
Febreze is not useful as a cockroach control method or deterrent. Controlling cockroaches is really about getting as much product to as many roaches as possible. Over the years, many products such as baits, dust, liquids, and aerosols have been developed for this goal.
Insects and Arachnids
Strangely enough, one of the most prevalent kind of predator that cockroaches face are fellow insects! The emerald cockroach wasp, Ampulex compressa, for example, has an unusual way of preying upon cockroaches. The wasp stings the cockroach's brain, which paralyzes the cockroach.
Cockroaches are blessed with an amazing sense of smell. This is what they use when seeking food and mate but at the same time, this is also their weakness. A cockroach's sense of smell can be used to get rid of them.
The best roach killer, based on our research, is the advion 383920 Cockroach Gel Bait; a commercial-grade roach killer set that is easy to use and lasts months after application. It can kill all sorts of cockroaches, including the American and German variety, and it's even safe to use if you have pets or kids.
Mint. It has been said that cockroaches dislike the strong smell of mint, so using this scent in your home can be effective in keeping these pests away.
Leaving the light on doesn't deter cockroaches effectively because they can navigate in low-light conditions. While they're mostly active at night, they may still come out in search of food or water. During the day, cockroaches hide in dark areas not directly exposed to light.
There's a long-running joke that cockroaches could survive the apocalypse, as getting rid of unwanted roaches is difficult if you have an infestation. But if you want to kill them on contact, all you need to do is reach for your handy bottle of Pine-Sol! Considered a "contact insecticide," it kills them quickly.
Ultrasonic Cockroach Repellents
There are electronic devices that emit high-frequency sound waves that act as cockroach repellents. These devices emit sound in the 22-65 Khz range which is inaudible to humans but can be detected by certain pests, including cockroaches.
Rosemary is considered one of the best roach repellents because it's actually highly toxic to the insects. Even better, this plant can be found at your local nursery, hardware store, or plant shop and requires little water. Just make sure you place it in direct sunlight.
Strong Odors
An unsealed bowl of sugar or open box of sweet cereal can also seduce their senses. Nice smells aren't the only ones they love. The smell of garbage, a compost pile or dirty laundry whets their appetites. They find collections of grocery bags and empty boxes with the faint smell of food delicious.
Eucalyptus
Place plants (you can find them in craft stores) anywhere you see roaches. You can also dab some Vick's Vapor Rub inside cabinet corners. Don't put the Vick's where your pet can get at it.
Another way you can repel cockroaches is by using home remedies for roaches that offend their sense of smell. 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.
The results of the investigation on what color will repel the greatest number of cockroaches, indicate that red light repels a greater number of roaches than the other five colored lights and the control group of no light. Green light deterred the second most roaches followed by white, yellow, and blue.
The scent emitted by the peppermint oil will act as a barrier, making these areas unattractive to roaches and encouraging them to seek shelter elsewhere.
Attractor #1: Food
What attracts cockroaches more than anything is food. Roaches need food to survive. Eliminating access to food can help eliminate a roach problem. Throw away any food that has been left out on the counter.
Ethanol Directly Kills Cockroaches
While white vinegar won't kill those pesky insects, ethanol—also known as common alcohol—will kill cockroaches. Cockroaches are particularly sensitive to ethanol and a direct hit from it will take them down.
While the sweet smell of residual food might be attracting roaches into your home, don't forget that alternative smells may be contributing too. For instance, a sweet bowl of potpourri could be luring them in, as could a sickly sweet scented candle.
For homemade cockroach control, you can make a simple bait using boric acid, sugar, and water. Mix equal parts of boric acid and sugar, then add a bit of water to form a paste. Place this mixture in small containers or on pieces of cardboard and put them in areas where you have seen roaches.
Many insect foggers contain pyrethrin as an active ingredient. While pyrethrins are somewhat effective against exposed flying insects such as house flies, they are seldom lethal to roaches, ants, bed bugs, spiders, silverfish, and other crawling pests.
What causes roaches in houses and apartments? What attracts roaches to a clean house primarily consists of their basic needs: food, water, and shelter, although they are usually brought into houses and apartments on other items, such as luggage or clothing.