Go Natural Mix 1 cup of baking soda with 2/3 cup of honey a 1/3 cup of sugar for a sweet but deadly cockroach treat. They'll come for the honey and leave with enough baking soda in their system to kill them. Baking soda strikes again!
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.
1. Kill Roaches With Baking Soda and Onions. Let's begin with one of the quickest, easiest, and most “make it right now!” home remedies for roaches – baking soda and onions, both of which you may already have in the fridge. Dice a handful of onion, sprinkle it with deadly baking soda, and voila!
Boric acid is a powerful natural home remedy for getting rid of roaches overnight. Mix equal amounts of boric acid, flour, and sugar until it becomes a dough-like consistency. Place small pieces where the roaches can feed on them.
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.
Boric Acid
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.
Citronella
Citronella not only works great for repelling mosquitos but also cockroaches. While the candles don't work well against roaches, you can use citronella oil as a deterrent. You can mix it with water and use it as a spray or simply wipe down areas with the diluted mixture.
Borax is a readily-available laundry product that's excellent for killing roaches. For best results, combine equal parts borax and white table sugar. Dust the mixture any place you've seen roach activity. When the roaches consume the borax, it will dehydrate them and kill them rapidly.
So what smell do roaches hate? Oregano, rosemary, mint, eucalyptus, lemongrass and catnip are great herby options. Citrus oils work brilliantly too.
All About Vinegar
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. It can, however, help deter roaches and get rid of germs in the kitchen when used as a cleaning agent.
Mix a pinch of sugar with some baking soda in a bowl and leave it for the cockroaches. Attracted to the food source (the sugar), the roaches will ingest the poison (the baking soda) and die. It's safe and efficient, but make sure you clean up any dead roaches as soon as possible.
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.
Bleach can be a useful tool for keeping roaches from visiting in the future. It is an effective and common cleaning agent in many homes, and the pungent aroma of the chlorine it contains is familiar to just about anyone. Turns out, roaches can't stand the overwhelming smell, either!
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.
This one's another simple, homemade bait trap. Place a dollop of peanut butter, a piece of a banana peel or a similarly sweet bait in the center of a paper plate. Then, sprinkle CimeXa insecticide dust all around the bait on the plate. Gently place the plate where roaches can easily reach it.
Look for Shed Skin and Egg Casings
One of the most obvious signs of an active cockroach nest is shed skin, which cockroaches molt as they grow. Another sign is egg casings, which look like small brown capsules. Look for these items near baseboards, cupboards, and other areas where roaches might be nesting.
Boric Acid
Boric acid is believed to be one of the best home remedies for cockroaches. For best results, dust a little bit of this powder in corners and floors and let it sit while roaches come in contact with it and die.
If you only have a few cockroaches, this is the way to go. Coat the inside of the jar in petroleum jelly and place a banana peel in the bottom. Place the uncovered jar in a dark place. The scent of the banana peel will draw the cockroaches in but, the inside of the jar will be slippery and not allow them to escape.
Cockroaches are not truly social insects (like honey bees or termites). As such, they do not have a queen. However, they are considered 'gregarious' and tend to congregate during rest times (generally the daytime).
Baited Traps
Another popular, and easy way to kill roaches overnight, is to use baited roach traps. These traps work by either trapping the roaches inside with glue or other substances or by providing them with poisoned food. When the cockroach ingests the poison, it then returns to its nest and dies.