What types of chemicals do professional pest exterminators use?

Pest control services are necessary to protect our homes and businesses from various pests that can cause harm to our health and property. Professional pest exterminators are trained and equipped with the tools and knowledge to identify and eliminate pest infestations using various methods, including the use of chemicals. In this article, we will discuss the types of chemicals that professional pest exterminators use to control pests.

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At Shield Pest Defense in Missoula, Montana, we prioritize the safety of our clients and their properties. Therefore, we use only EPA-approved chemicals that are effective in eliminating pests while posing minimal risk to human health and the environment. The types of chemicals used depend on the type of pest infestation and the severity of the problem.


Insecticides are the most common type of chemical used in pest control. They are designed to kill insects by targeting their nervous system, resulting in paralysis or death. Insecticides are available in various forms, including sprays, baits, dust, and granules. The choice of insecticide and application method depends on the type of pest being targeted and the location of the infestation. Some commonly used insecticides include pyrethroids, neonicotinoids, and organophosphates.


Rodents like mice and rats can cause significant damage to homes and businesses. They can chew through walls, wires, and insulation, and they can also transmit diseases. Rodenticides are designed to kill rodents and are available in the form of baits, pellets, and tracking powders. These chemicals work by causing internal bleeding or by disrupting the nervous system of rodents. Some common rodenticides include bromadiolone, diphacinone, and warfarin.


Fumigants are chemicals that are used to eliminate pests in enclosed spaces, such as homes, warehouses, and storage facilities. They work by releasing a gas that is toxic to pests. Fumigants are highly effective in eliminating pests, but they require specialized equipment and training to use safely. Some commonly used fumigants include methyl bromide, phosphine, and sulfuryl fluoride.


Repellents are chemicals that are used to keep pests away from homes and businesses. They work by creating a scent or taste that pests find unpleasant, causing them to avoid the area. Repellents are commonly used to control pests like mosquitoes, flies, and ants. Some common repellents include DEET, picaridin, and citronella oil.

Growth Regulators

Growth regulators are chemicals that disrupt the normal growth and development of pests. They work by mimicking the hormones that regulate growth in insects, causing them to molt prematurely or preventing them from reproducing. Growth regulators are commonly used to control pests like fleas, ticks, and cockroaches. Some common growth regulators include methoprene, pyriproxyfen, and hydroprene.

Professional pest exterminators are trained to use these chemicals safely and effectively. They follow strict guidelines and regulations to ensure that the chemicals are applied correctly and do not pose a risk to human health or the environment. They also use personal protective equipment, such as gloves and masks, to protect themselves from exposure to the chemicals.

At Shield Pest Defense, we take pride in our commitment to using only safe and effective pest control methods. We understand the importance of protecting your home or business from pests while also ensuring the safety of your family, pets, and the environment. If you are dealing with a pest infestation, contact us today to schedule a consultation and learn more about our pest control services.