Will Salt Kill Cockroaches?

Common salt is a repellent to most insects including roaches. It can also kill bugs due to its dehydrating ability. salt is capable of sucking out all the fluids in an insect’s body, leading to instant death. There are 2 ways you can use salt for roaches. First, this can be done by making a strong solution that is sprayed on them. Secondly, you can simply sprinkle it on them.

Table salt can repel roaches but it will not kill them unless they eat it in large quantities. However, Epsom salt can kill cockroaches fast because it contains magnesium sulfate which is toxic to them. To get rid of roaches, dissolve 4 ounces of Epsom salt in 150ml water and spray the solution on them.

Their known hiding places may also be sprinkled with salt to make the environments uncomfortable. Cockroaches prefer living in crevices and cracks. It would be essential to sprinkle salt in such areas as they will most likely be hiding in them. The vermin mostly come out at night, using darkness as cover.

Will salt kill cockroaches?
Will salt kill cockroaches?

Do cockroaches eat salt?

Technically, cockroaches do not eat salt because it is not a meal like any other food that may attract them. Instead, the condiment repels them. However, roaches eat food with salt in it, and they never experience any problems. Salt grains are hard, and the taste is also likely to repel cockroaches.

Since cockroaches do not eat salt directly, it has to be combined with their favorites like fried meat. Excess amounts of the substance are potentially dangerous to the vermin. Roach salt control may involve sprinkling its solid particles on their entry points or common areas.

Roaches feed by chewing their food. They can chew into any soft edible substances. Due to such characteristics, cockroaches can choose their food based on their taste. Salt is a common repellent to cockroaches based on its taste.

Salt grains are also too hard for the cockroach mandibles. However, in the dissolved form, they can easily consume it. Roaches have a good sense of smell, allowing them to detect food from wherever it is. Salt does not have a strong smell. Despite such qualities, those bugs can still detect salt and avoid it, especially in its raw form.

A point worth noting is that salt does not kill cockroaches unless if the quantity is quite high. Most people use salt only to repel cockroaches and not to kill them. It is also clear that roaches do not eat salt despite having a huge appetite for all types of food. Therefore, to repel them, one must use other aggressive means to keep them away from homes.

Does Epsom salt kill cockroaches?

Epsom is simply magnesium sulfate which is highly toxic to cockroaches. Research conducted by the University of Nevada claimed that Epsom is toxic to vermin. The substance can be mixed with water and sprinkled around areas most frequented by cockroaches.

It is precisely clear that Epsom kills cockroaches if you manage to mix it with bait so that they can ingest it orally. Its repellent effects have been proven to also work against those pests. However, If you have a serious number of them, it might be frustrating to attempt using a salt solution against them.

Epsom salt solution alone may not work well to repel cockroaches that are already familiar with it. However, it would be advisable to add cloves or peppermint to make it more effective. Generally, other substances that might repel cockroaches include garlic, cinnamon, and coffee grounds. This can also be combined with salt for better results. 

A mixture of cloves with Epsom will provide the best remedy. The magnesium component in the salt tampers with the biological system in the roach, preventing it from feeding effectively. On the other hand, the cloves repel the insects.

Does salt attract or repel roaches?

Salt does not attract roaches because it contains both ammonium chloride and ammonium nitrate. The two compounds are excellent repellents against cockroaches. Additionally, consuming salt dehydrates them by drying out all the fluids in their bodies.

Cockroaches depend on smell and taste to make feeding choices and the taste of salt may not be friendly to them. Therefore, salt will only repel and not attract cockroaches. One point to note is that salt may not be very effective in preventing cockroaches from entering the house.

It may only be used as a temporary remedy. Cockroaches are also highly adaptive and may easily find other ways to get food within the home. Notably, cockroaches can go for up to one month without food as long as they have access to water. The implication is that using salt may not be the most effective way despite being repellent to those annoying insects.

Roaches are known to be the hardiest of all insects. Cockroaches eat virtually anything, ranging from human food to all forms of waste. They are easy to spot in dumpsites, toilets, and pit latrines. Just the same way, it is easy to spot them in the kitchen. If your bathroom is infested, you can dip your toothbrush in salt to keep roaches away from it. This can also be sprinkled around the drains after cleaning.

Can bug a salt kill cockroaches?

A bug salt is a plastic gun used to shoot salt grains at insects. The plastic gun can discharge 80 grains per shot and is most effective against soft-bodied bugs. The gun effectively kills insects such as mosquitoes and flies and can also kill cockroaches.

It was invented for insect hunting sports. Effective use of the bug a salt gun involves aiming at a specific insect and pulling the trigger to release salt spray. The projectile salt grains leave the gun nozzle at a velocity strong enough to injure and even puncture insect bodies. Cockroaches have soft bodies making them vulnerable to the effects of the bug salt gun.

Challenges of using bug a salt gun for roaches

In most cases, roaches will invade your home in large numbers. The rates at which they multiply are also very high. To eliminate cockroaches, one needs to work on eliminating the eggs too. Their eggs are usually laid in crevices and hard-to-reach corners.

Notably, cockroach eggs usually have soft shells and maybe penetrated by salt spray made from bug salt guns. Unfortunately, a bug salt gun requires the user to aim specifically at the identified target. It is relatively difficult to aim the gun nozzle at a crack or crevice.

The reason is that the cracks are likely to have corners that may provide safe hiding places. It would also be difficult to chase cockroaches in different areas within the home using a bug salt gun. Cockroaches also hide in hard-to-reach and dark areas, where the guns may not be effective in eliminating them.

Therefore, bug-a-salt guns are better used for recreational purposes such as insect hunting sports and may not be recommended for eliminating cockroaches in homes. However, if there are a group of ants eating a roach, it may scare both of them. The particles will not kill the roach or ants unless they were already dead.

Bug a salt is also more challenging to use. It can make your home dirty and may cause different injuries. For example, accidentally spraying salt in an individual’s eye or spraying salts in places where it may cause damage.


  • Felix Odi

    Hi, I’m an experienced author and content creator with over 18 years of experience as a publisher. Growing up in rural areas of Bristol, FL, I developed an interest in pest control, fish farming, and poultry keeping. Farming is a main activity in the area, and pests are always part of our major setbacks. I had to learn how to get rid of them with simple DIYs.