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Demon Max Insecticide

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Demon MAX Insecticide contains 25.3% cypermethrin providing up to three months of pest control with NO ODOR. Demon pesticide may be used indoors and outdoors as a bug spray for controlling roaches, ants, spiders, fleas and many other pests and will not leave any staining or noticeable residue.

Target Pests

Demon MAX insecticide is intended to kill and control ants asian cockroaches carpenter ants carpenter bees centipedes cockroaches crickets earwigs fleas mosquitoes silverfish bees scorpions spiders ticks wasps and wood destroying insects.

For Use In

Demon bug killer is for use inside as a crack and crevice spray of nonfood areas including cabinets windows doors closets shelves baseboards and garages. Outdoors Demon Max may be applied to all areas as a broadcast spray.


Mix Demon MAX ec at a rate of 1.3oz per gallon of water and apply as a coarse spray to areas of pest infestation.

Indoors apply Demon as a spot or crack and crevice treatment in listed areas.

Outdoors broadcast spray Demon Max EC around structures thoroughly covering all infested areas.

Coverage Area

Each 16oz bottle of Demon Max will make 12 gallons of mixture and cover 12,000 square feet. Generally Demon MAX is one years worth of pest control for the average homeowner.

Time to Kill

Demon MAX will begin killing insects immediately and provide 3 months of insect protection when applied properly.

Mix Rate

The demon max mix rate is 1.3 ounces per gallon of water.

Active Ingredient

Cypermethrin 25.3%

Demon Max Insecticide

Demon Max Insecticide

Demon Max EC is an excellent product created by Syngenta. Demon Max can be used both indoor and outdoors and contains cypermethrin which is a really great product for a quick knockdown of pests and it has a really good residual of about 2 to 3 months. Cypermethrin was the first synthetic pyrethroid introduced in the pest control industry about 20 years ago and is still very widely used today.


Indoors, you could use it in a pump sprayer and apply the product around your baseboards and cabinets. Outdoors, you can use it either with a hose end sprayer or a pump sprayer and use it on your turf and ornamentals to keep pests away as well as use it as a perimeter spray. It has a little bit of an odor to it though it usually dissipates in about a day or two. Demon Max is very effective on a wide range of insects: roaches, ants, ticks, fleas, mosquitoes among others.


Demon Max Insecticide is a dual action pre-treatment and treatment that both kills and repels over twenty pests. The residual last a longtime for increased protection against termites. Low water solubility contains the product from leaching out and thus a reduced environmental impact. Demon Max Insecticide provides protection against both Subterranean and Formosan species.

Product Q & A

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Browse 13 questions Browse 13 questions and 16 answers
Is demon max safe around ?
Beth Clinnard on Aug 14, 2017
BEST ANSWER: AROUND WHAT! It is plant based, a "natural" product. But it's still not edible or drinkable for sure. It would be dangerous to use around pets too. I use it only outdoors close to foun- dations and weep holes. -Bill
Will Demon MAX be enough to get rid of Roach infestation? Or do I need Gentrol IGR to control reproduction?
mary on Jan 17, 2017
BEST ANSWER: I would not use Demon Max inside and would recommend Reclaim and Gentrol mixed together to control german roaches
Can demon max control fire ants?
Lenny on Feb 16, 2018
BEST ANSWER: Drench Method (Ant Mounds, Fire Ants):
Apply 1-2 gal of 0.1% Demon Max emulsion
to each mound area by sprinkling the mound
until it is wet. Treat a 2 ft diameter circle
around the mound. For mounds larger than 12
inches, the higher volume and wider treatment
diameter (up to 4 ft) may be needed. For best
results, apply in cool weather, such as in early
morning or late evening hours, but not in the
heat of the da
I sprayed demonmax with a surfactant five days ago,just got an inch of rain. Will I need to re spray ? We have terrible mosquitoes in county where I live.
C in tex on Jun 24, 2017
BEST ANSWER: No the rain will not wash away the residual. It will not last as long when applied to a plant, but if the item was allowed to dry then you are fine.

Does it kill German cockroaches?
A shopper on Apr 2, 2018
BEST ANSWER: Cypermethrin is a widely use pesticide found in many products. The key is the percentage of cypermethrin used. 1/2oz per gallon is stronger than most common big brand Roach sprays. It doesn't care where the roach is from... it will kill without prejudice. Hope this helps!
Is it safe for pets?
Maria T on Apr 18, 2018
BEST ANSWER: When applying the product keep all pets and children off the area until it has fully dried once it has dried they would be safe to go back out to the area.
Does it come with a spray pump?
A shopper on Apr 3, 2018
BEST ANSWER: We do offer a 1-gallon pump up sprayer.

Is demonmax good for killing bedbugs?
A shopper on Mar 10, 2018
BEST ANSWER: No you would not want to use this product to kill bed bugs inside. Here are some other recommendations.

What is the best product for exterminaing fleas inside?
Sanuel C on Sep 25, 2017
BEST ANSWER: We would recommend using a product called Novacide to use inside the house, and to use Reclaim IT for the outside of the structure. Checkout our Flea control kit for all products that are recommended to control fleas in your home and yard.

Does anyone know the name of the insecticide powder that melts the wings on a bee and they drop to the floor?
A shopper on Sep 21, 2017
BEST ANSWER: I am not familiar with any product that does that, sorry.
How do i use it for my lawn and fruit trees and does it kill fleas?
Angela G on Sep 5, 2017
BEST ANSWER: For residential lawns, apply Demon Max at
the rate of 0.33-0.65 fl oz per 1,000 sq ft in a
volume of water sufficient for uniform
coverage such as 3-20 gal. Use the lower rate
to knock down pests and the higher rate
where faster knockdown or greater residual
is desired. The maximum application rate
on lawns and other turfgrass is 0.44 lb ai/A
(0.0101 lb ai/1,000 sq ft). Lawn should not be
longer than 3 inches at the time of application.
Base need for retreatment upon monitoring
for pest presence. Application in combination
with compatible surfactants may enhance
penetration. Arid climates generally require
the higher volume.
When should you use Demon Max or Demon WP.
Les on Jul 31, 2016
BEST ANSWER: What are you trying to control? Demon Max is not labeled for use indoors.

Strongest roach killer
Drea on Jul 30, 2016
BEST ANSWER: Apex roach gel is a perfect, very effective roach gel bait, also think about adding some Gentrol Point Source to the regiment.



Customer Reviews

5.0 / 5.0
13 Reviews
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Easy to Use
5.0 / 5
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Safe to Use
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Would you Recommend?
Yes (1)
Easy to Use
5 / 5
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5 / 5
Safe to Use
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Would you Recommend?
good stuff
have boon using demon for over 20 yrs. luckily it has dropped in price but not effectiveness over the years. (i paid over $70 for my first pint.) at today's price it is way cheaper than paying $50 a month for an insecticide co. to come out once a month. i will continue to use it until someone screws around with the formula and dilutes the effective ness. good stuff!!
April 18, 2018
3 weeks ago
Same active ingredient, better price
The percent of active ingredient is 25.3%, vs. 25.4%, which is negligible, but the price difference is impressive. Same result, for less. I can live with that!
September 14, 2017
8 months ago
Demon Max
This product is all they say it is and better! I normally don't write reviews, but this one is worth it. Try the WP if you want. I did and came back for larger size this year. Stopped my ant and spider problems quickly, and with no danger to my pets! What else could you want? Used it inside my kitchen cabinets as well.
March 21, 2016
Excellent ant killer
Best liquid concentrate I have found for killing ants, including fire ants. Works quickly and is cheaper to use compared to powder fire ant killers.
March 5, 2016
Demon Max
Great product to use, goes a long way, and much more economical doing it yourself. The shipping was superfast, would recommend this product.
February 13, 2016
Demon Max Rocks !
Love this kills and kills and kills
December 3, 2015
Works great
Demon Max works great on my 2 acres, it is real stuff I cannot get anything that works off of the shelf here in CA.
August 15, 2015
Awesome Product
I have purchased this item a few times and I must say it works well. My friends call me and tell me that the pesticide I sprayed in their homes killed all the bugs!
July 16, 2015
Have used everything Home-depot had for bug for years .... One application of this stuff EVERYTHING DEAD !!!!!!
June 13, 2015
nocked down my pest
Awesome product
April 9, 2015

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