The chemical used in misting systems and yard fog treatments (pyrethrins) are derived from chrysanthemum flowers.

knockdown effect

Pyrethrins affect the nervous system of insects that touch or eat it. This quickly leads to paralysis and ultimately their death.

low toxicity

Pyrethrins are low in toxicity to plants, pets, and people. The EPA has classified mosquito misting chemicals with the lowest toxicity rating they assign. 


In the presence of sunlight, pyrethrins breaks down rapidly on soil and plant surfaces.

Frequently asked questions

Your misting system sprays a pyrethroid chemical solution. 

For more information about the chemical, click here.

The chemical affects the mosquitoes’ nervous system, first inhibiting them from biting, and then leading to immobilization, paralysis, and death.

While no pesticide should be regarded as 100% risk free, pyrethroid chemical is derived from the chrysanthemum flower and considered to be very low in toxicity to plants, pets, and people.

Per the CDC, “pyrethroids can be used for public health mosquito control programs without posing unreasonable risks to human health when applied according to the label.”

Pyrethroids are commonly used to treat many types of insects. However, due to the misting dilution rate and targeted spray times, it is primarily effective to the mosquito population.

Contact us to discuss targeting other insects (such as spiders) or avoiding harm to other insects (such as bees).

The mist will not harm plants, since the chemical dosage is too low for them to be affected.

Installation time will depend on how many nozzles your system has. Most installs typically take 4-6 hours. You do not need to be home – we just need access to your yard.

How often your system needs to be refilled will depend on how many nozzles you have. It is important to perform regular maintenance on the system to ensure there are no clogged nozzles, leaks in the tubing, and the motor and pump are in good condition. 

We take care of all of that for you with our Service Plan. With simple recurring billing and automated service visit scheduling, we work hard to make sure you never have to think about mosquitoes again.

The unit is typically installed on the side of your home by a power source, most commonly near the A/C unit.

While the mosquito population is significantly reduced in the winter months, here in Houston, they never really go away. So, it is beneficial to keep your system running to prevent mosquitoes from breeding. 

Additionally, the system is designed to be misting several times each day. If your system hasn’t been operational for an extended period of time, it is possible to experience issues, such as:

  • Clogged nozzles
  • Stagnant chemical
  • Weak pump

We recommend running the system on lower settings, instead of turning the unit off.

Heck yes, we do! Thanks in advance for sharing your love of No More Mosquito with your family and friends!

We will send you a $100 Amazon gift card for anyone you refer that installs a misting system or signs up for a service plan.

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We’ll come take a look, evaluate your mosquito situation, and discuss which solution would be most effective. During our visit, ask us anything!