How Does Roach Spray Work? The Basics Of How Insecticides Kill Roaches

spray the cockroach

Roaches are a public nuisance. Aside from being scary and annoying pests that will always try to find a way to go into your home, these insects also carry with them a wide array of bacteria, viruses and other microbes. They are actually known to cause serious health issues if they get into contact with your food.

To kill the roaches effectively, most homeowners opt to use a roach spray. This product allows many of us to easily deal with these pests in just a matter of minutes. But how does roach spray work and why are these products very effective? Read the rest of the entry and find out how they kill roaches.

What Active Ingredients Are In Roach Sprays?

roach spray

In most cases, roach sprays combine different chemicals in order to kill roaches or deter them from going near the spot by acting as an insect repellent. In most cases, roach sprays will contain active ingredients such as avermectin, borates, insect growth regulators, as well as neonicotinoids.

They also typically contain pyrethroids, organophosphates and even N-methyl carbamates. Most of these active ingredients are not just toxic to roaches as well as to other insects, these chemicals are also known to be harsh enough to cause problems in humans especially if they are inhaled or ingested.

Pyrethroids are one of the most common ingredients in insecticides. The many different types of pyrethroids include Allethrin, Deltamethrin, Permethrin as well as Tralomethrin. A lot of the popular roach spray products actually combine pyrethroids with other active ingredients to make a roach killer.

How Does Roach Spray Work?

spraying cockroach

Depending on what type of chemicals are being added to the roach spray, the different products are known to work in many different ways. Most of the popular roach spray products however, will use pyrethroids, carbamates and organophospates. This means they will all work on one specific area.

These insecticides work on the insect’s nervous system by disrupting it and by destroying the nerve cells. Once this happens, the roach will no longer be able to move or feed. The insecticide will go through the cuticle and bind the sodium channels to slowly stop all muscular activity within the roach.

The roach will basically have a lasting paralysis. Over time, more nerve cells will be affected until the insect’s lungs and heart will no longer be able to function. In most cases, once the chemicals take effect, the roach will try to run and escape. But you should know that the toxins will kill the roach in the end.

What a lot of people do not know is that these products are actually designed to act much like chemical weapons. As mentioned, the chemicals themselves are harmful to humans especially when used excessively, but because they are used in small doses, it is deadly only to insects when used properly.

The Other Effects Of Roach Sprays

cockroach spray

When it comes to using roach sprays, you need to understand that it is not as simple as putting the chemicals on the roaches. You need to take into consideration the fact that some roaches are actually resistant to some of the active ingredients that are used in some roach sprays.

This is why many manufacturers will not just combine two or more insecticides, they will also try to add other chemicals in order to produce better results. For example, instead of killing roaches on contact, some products actually have a delayed effect, allowing the roach to go back to its nest or hiding spot.

This also allows the roach to come into contact with other roaches or with eggs and juveniles so that they too will also die. Some roach sprays also contain insect growth regulators that will work against the roach eggs and larvae so that they will no longer be able to reach maturity or be able to hatch.


spraying a roach

When it comes to figuring out how do the roach sprays work, you need to know that it all depends on what active ingredients or toxins are being used by the manufacturer to make the product. In most cases, the roach spray will contain pyrethroids, carbamates or organophospates.

This means that the spray will work by disrupting the roaches’ nervous system. This happens when the active ingredient or ingredients will go through the cuticle and block the sodium channels in order to slowly stop all muscular activities. This includes movement, feeding, breathing and their heartbeat.

If the spray has other chemicals included, it might be to allow the roach to go into the nest and allow the insecticide to come into contact with other roaches or to inhibit the development of eggs and larvae. But for as long as the roach is not resistant to it, the pesticide will slowly but surely kill the roach.

About the Author Emily Taylor

My name is Emily Taylor, gardening is my passion and I’m looking forward to sharing it with everyone. I know that there are millions of people out there want their backyard and garden be attractive just like their front yard, so I am here to help you create your own backyard paradise.

Leave a Comment:

1 comment
Jesse johnson says Mar. 2018

Hello emily that was a great article an exellent wealth of information. Also i have to add im stunned by your beauty, that’s an absolutely gorgeous picture.

Add Your Reply

Pin It on Pinterest

Share This