Description
Demon Max Product Specifications:
Product Name: Demon® Max Insecticide
Manufacturer: Syngenta
Active Ingredient: Cypermethrin 25.3%
Chemical Class: Synthetic Pyrethroid
IRAC Classification: Group 3A
Formulation: Emulsifiable Concentrate
Active Ingredient Concentration: 2 lb. active ingredient per gallon
Target Pests: 30+ listed pests
Indoor Use: Yes, according to label directions
Outdoor Use: Yes, according to label directions
Termite Applications: Yes, subject to label and state licensing requirements
Mixing Required: Yes
EPA Registration Number: 100-1218
Signal Word: WARNING
Why Choose Demon Max for DIY Pest Control?
Demon Max is an excellent option for experienced DIY homeowners who want a professional-grade concentrated insecticide rather than a typical ready-to-use household bug spray. Its combination of 25.3% cypermethrin, fast knockdown, residual performance and a broad 30+ pest label makes it particularly versatile for controlling recurring pests around homes and other structures. From cockroaches hiding around plumbing and appliances to spiders around the exterior perimeter and mosquitoes in appropriate outdoor treatment areas, Demon Max provides one concentrated product for numerous pest-control situations.
Professional strength. Fast knockdown. Long-lasting residual control. Always read and follow the complete product label before mixing or applying Demon Max.
How to Use Demon Max:
For general structural pest control, first identify the pest and inspect for activity. Look for areas where insects hide, enter, nest or travel. For appropriate indoor applications, Demon Max can be used as a spot or crack-and-crevice treatment according to the label. Focus treatment on actual pest harborages rather than unnecessarily spraying exposed surfaces. For exterior pest control, concentrate applications on labeled areas where insects enter or congregate, such as appropriate areas around foundations, doors, windows and other structural entry points.
Keep children and pets off treated surfaces until the treatment has dried.
How to Mix Demon Max:
Demon Max is a concentrated insecticide that must be diluted with water before spray application. For many general pest applications, the label provides dilution rates including:
0.1% solution: ½ fl. oz. (1 tablespoon) Demon Max per gallon of water. Higher concentrations are available for certain labeled pests and applications, so do not assume one rate applies to every treatment. Determine the correct rate from the current label based on the pest and application site.
Basic Mixing Instructions
- Determine the correct Demon Max rate for your target pest.
- Add the desired amount of water to your sprayer.
- Measure and add the appropriate amount of Demon Max.
- Close the sprayer securely.
- Shake thoroughly to mix.
- Re-agitate if spraying is interrupted.
- Prepare only the amount of finished solution needed for the treatment.
Syngenta specifically instructs users to shake or re-agitate the sprayer if application is interrupted.
Demon Max for Cockroaches:
Demon Max is an excellent professional insecticide for cockroach control. Syngenta specifically highlights its strength and speed for difficult pest cleanouts, including cockroach infestations.
For indoor cockroach treatments, the label permits appropriate crack-and-crevice or spot applications to areas where cockroaches hide, including locations such as:
- Baseboards
- Corners
- Storage areas
- Closets
- Around water pipes
- Doors and windows
- Behind and underneath refrigerators
- Cabinets
- Sinks
- Furnaces
- Stoves
- Other labeled pest harborages
For difficult German cockroach infestations, consider incorporating Demon Max into a complete Integrated Pest Management program that includes sanitation, monitoring and appropriately placed cockroach baits and/or an IGR.
Demon Max for Spiders & Scorpions:
If you’re looking for a professional insecticide for spiders and scorpions, Demon Max is an excellent option. Syngenta specifically identifies spiders as one of the difficult pests for which Demon Max’s strength and speed are particularly useful. Treat labeled cracks, crevices, pest entry points and harborages where spiders or scorpions are likely to hide or travel. For scorpions, the label also recommends addressing harborages such as accumulations of lumber, firewood and other materials that provide hiding places.
Demon Max for Ants & Carpenter Ants:
Demon Max controls ants and carpenter ants. According to the label, applications can be directed to ant trails and appropriate areas around doors, windows and other locations where ants are found. Exterior barrier treatments can also be used according to label directions to help prevent pest entry. For carpenter ants, locate areas of activity whenever possible and address conducive conditions such as moisture-damaged wood in addition to the insecticide treatment.
Demon Max for Mosquitoes:
Mosquitoes are included on the Demon Max label, making this concentrate another option for professional outdoor mosquito-management programs. Applications should be made according to the mosquito-specific label directions and focused on appropriate areas where adult mosquitoes rest and harbor. For best results, mosquito management should also include eliminating unnecessary standing water and addressing mosquito breeding sites.
Demon Max for Wasps & Bees:
Demon Max is labeled for wasps and bees. For labeled nest treatments, the product label directs applications to be made late in the evening when the insects are at rest, thoroughly treating the nest, entrance and surrounding areas where the insects land. Always use appropriate protective equipment and follow all label directions for stinging-insect applications.
Demon Max for Carpenter Bees:
Carpenter bees are also listed on the Demon Max label. Treat carpenter bee activity only according to the specific label directions. Addressing active galleries along with appropriate exclusion and repair can help provide more complete long-term management.
Demon Max for Termites:
One of the biggest differences between Demon Max and many general household insecticides is its termite label. Syngenta describes Demon Max as a powerful soil pretreatment against termites, and the current label includes subterranean termite control. Important: The label states that subterranean termite applications must be performed by individuals or firms licensed or registered by the state to apply termiticide products, and state requirements may be more restrictive.
For DIY customers, check your state and local regulations before considering Demon Max for structural termite applications.

































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