The 6 Best Thermal Foggers

This wiki has been updated 21 times since it was first published in February of 2019. By using heat to vaporize a solution — insecticide, in most cases — these thermal foggers are useful for pest control in hard-to-reach outdoor areas, like shrubs, trees, and wide swaths of lawn. Since they operate at very high temperatures, they inherently pose a fire risk, so make sure to read the instructions carefully and always follow all safety precautions. When users buy our independently chosen editorial choices, we may earn commissions to help fund the Wiki.

1. Longray Pulse-Jet

The Longray Pulse-Jet (appx. $1099) is a bit too intense for occasional home users, but professionals are in for a treat. Whether you need to address a pest problem in a massive commercial building or a wide-ranging natural environment, this model is up to the task.

Backed by a 1-year warranty
For water- and oil-based solutions
Extremely fine particle size

2. Golden Eagle Dyna-Fog

From cavernous warehouses to sprawling parks, the Golden Eagle Dyna-Fog (around $1669) will pump out a copious amount of mist — up to 34 liters per hour, to be exact — providing coverage for large, bug-infested areas. This thing is tailor-made for commercial use.

Durable stainless steel filters
Holds more than a gallon of solution
Comes with 2 cleaning brushes

3. Smith Performance Sprayer

Its aluminum reservoir that contains your liquid is tough enough to put in some heavy hours out in the elements without breaking down, making the Smith Performance Sprayer (appx. $191) a nice option for those who like to spend their time outdoors tending to the yard.

Applies 2 ounces per minute
Flow rate dial for easy adjustments
Works continuously for up to 6 hours

4. Longray TS36S

The Longray TS36S (around $1399) is a powerful, gas-fueled machine, complete with an advanced cooling system to regulate the temperature of the liquid as you work. It’s has a 1.6-gallon capacity, which is ample for most common and even heavy-duty uses.

Generates a cloud very quickly
Rust-resistant steel tank
Built-in protective shield

5. Bonide 420

Whereas it can be difficult to squeeze liquid pesticide into nooks and crannies, the Bonide 420 (appx. $79) will generate a cloud of tiny particles to infiltrate thick foliage and even the thinnest of crevices. Allowing it ample time to heat up helps prevent it from producing a flame.

Does not leave a residue
Trigger is smooth and reliable
Some components are weak plastic

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6. Black Flag 190107

Since it’s electric, all you have to do is connect the Black Flag 190107 (about $94) to a power source via an extension cord, and you’ll be ready to eliminate mosquitoes and flies from your yard or patio. Remember to preheat it prior to using for best results.

A helpful trigger lock
Lightweight for easy maneuvering
Can take a long time to heat up

Last updated by Sam Kraft

In addition to his corporate career as a marketing and communications professional in Chicago, Sam runs a popular blog that focuses on the city’s flourishing craft beer and brewery scene. He received his degree in journalism from DePaul University (which spurred his interest in freelance writing) and has since spent years developing expertise in copywriting, digital marketing and public relations. A lifetime of fishing, hiking and camping trips has left him well-versed in just about any outdoors-related topic, and over several years spent working in the trades during his youth, he accumulated a wealth of knowledge about tools and machinery. He’s a travel junkie, a health and fitness enthusiast, and an avid biker.

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