Diatomaceous earth is a natural way to deal with cockroach. It is available in fine powder form that sticks to roaches body and kill them by dehydration process. Diatomaceous eath is also very effective in killing the roach eggs. It is best method to use in fine areas, as DE fine powder can reach inside the cracks.
In that scenario, you can buy what are called desiccant dusts—like diatomaceous earth, a non-toxic substance you can find on Amazon—and that will dehydrate the eggs, thereby killing them.
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.
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.
Boric acid: Used correctly, boric acid is one of the most effective roach killers. It's odorless, has low toxicity to pets, and since it isn't repellent to roaches, they will not seek to avoid it, crawling through it repeatedly until it kills them.
A concoction of baking soda and sugar is an effective cockroach killer and controls the multiplication of these pests. Sugar acts as a bait to attract cockroaches and the baking soda kills them. You just need to identify their hideouts and sprinkle this mixture in those corners.
'Salt doesn't kill cockroaches!
That's right, it doesn't. It repels them.
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.
Dusts – A few insecticides used for cockroach control are applied as dusts or powders. Most familiar to householders are boric acid and diatomaceous earth. For controlling cockroaches, boric acid tends to be more effective. Roaches succumb to boric acid after crawling over treated surfaces.
Spray it with an Insect Growth Regulator (IGR). IGR's interfere with the development of insects by disrupting the molting process. This makes it so they can not develop properly and cannot reproduce. IGR's can also cause the eggs to abort.
The different body parts, waste, and saliva of cockroaches are allergens for certain individuals. Even dead cockroaches can still cause some allergic reactions. Therefore, it is not advisable to step on a cockroach, as its crushed body parts can trigger some allergies.
Studies have found a boric acid and sugar combination to be a very effective killer of roaches, but more readily available is Borax mixed with sugar, which also gets the job done. Simply mix three parts Borax to one part sugar for bait, and be sure to keep your pets out of the vicinity.
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.
Boric acid can quickly kick a roach infestation to the curb. It's extremely toxic and can kill multiple generations of roaches. Mix a combination of equal parts of boric acid, sugar and water to make a dough. Roll that dough into balls or cylinders and place them where roaches will find them.
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.
Can Pouring Bleach Down Your Drain Kill Roaches? An old wive's tale is that bleach can be used to clean out your drain system and to kill roaches that may be living in your drains. Bleach does indeed kill roaches, but it isn't recommended as a drain system cleaner.
Keep pests OUT
Insects don't enjoy baby powder nearly as much as your baby does. Sprinkle a line across areas where common household pests like ants, flies, roaches, and other unwelcome visitors tend to roam. They will relocate themselves promptly.
Set out a shallow dish or bowl containing equal parts sugar and baking soda. Roaches are attracted to the sugar, but the mixture is deadly to them. Sprinkle baking soda on greasy spots and let sit for about an hour.
The most common do-it-yourself (DIY) cockroach spray is a mixture of three parts fabric softener and two parts water. While it might come as a surprise, this mixture will kill cockroaches.
Sprinkle the diatomaceous earth around areas where roaches travel and frequent. The sharp particles of diatomaceous earth damage the waxy, protective exoskeleton of the roach, causing it to dehydrate and die, typically within 48 hours of contact.
Boric acid powder is an effective and safe treatment for cockroaches. Boric acid is a natural pesticide that kills roaches by dehydrating them. To make this mixture, combine equal parts of boric acid and flour and place in places where you've observed cockroach activity.
Soap and Water
Just like the fabric softener solution, mixing soap with water can kill roaches on contact.