Demon Max can have some knockdown properties, but it is not considered a contact kill product. It is a residual insecticide that once dry will last on the surface 90 days indoors and 30 days outdoors. However, this product is not labeled for gnats. You could use a product like Talstar P. You may want to look over our article on Getting Rid of Gnats for more information.
You cannot use Demon Max down a drain. Demon Max can only be used for crack and crevice and spot treatments; in, on, and around structures and buildings; on lawns, turf, vegetation, and soil; surrounding and under building foundations.
If you are trying to treat for your fly and drain problem please refer to and use the Drain Fly Kit. The Drain Fly Kit with Invade Bio Drain Gel will treat up to two infested drains and includes CB-80 Aerosol to control nuisance flies during the treatment process, plus 12 Catchmaster 100i Insect Monitors (Pack of 4 boards that split) to monitor infested drains. CB-80 Aerosol will shoot out in quick misting spurts that will allow you to spot treat around sinks and drains and in open areas.
Demon Max is not labeled for treating thrips. Talstar P is labeled for thrips on ornamentals, shrubs, bushes, flowers, etc. and can be used to treat the exterior perimeter foundation of the home as well as indoors as a crack and crevice application along baseboards, around windows, doors, etc. If spraying indoor plants, move the plants outside to spray and wait until dry before bringing them back indoors.
View the Talstar P product label for more information.
For home garden use on select fruits and vegetables, Hi-Yield 55% Malathion Insecticide Spray is labeled for thrips, aphids, bagworms and many other insects.
View the Hi Yield 55% Malathion product label for more information.
Demon Max is labeled for roaches, and you may mix this product with an insect growth regulator such as Gentrol for better control. You do not need to mix Demon Max with another insecticide. When applying these products indoors, we recommend also using a professional roach bait gel in areas where you cannot spray.
Please review our Roach Control Guide for more information on treating and preventing roaches.
Demon Max is not specifically labeled to control armyworms. Instead, you may use a product such as Talstar P. Please be sure to review the product label for more information and complete application instructions.
Yes, Demon Max is labeled for wasps.
Demon Max is labeled for flies and there is not another insecticide we would recommend mixing with it. ExciteR could be added to it to give a faster knockdown during initial application though. Horseflies and many other species of biting flies tend to develop on the edge of bodies of water and since they are strong fliers these breeding areas can be near or far which makes finding the source next to impossible. Using Demon Max will give some relief but since these flies can fly over treated areas it can be tough to get complete control. Relief should be on the way soon, however as horsefly season is usually only 3-6 weeks long.
It will be difficult for any product to last over 30 days in extreme heat and direct sunlight, however, we would recommend an encapsulated product for the longest residual. Demon Max has an oil base, while the Bifen IT is a water-based insecticide (Bifen XTS is oil-based). It may last a bit longer than Bifen IT, but would have similar residual to Bifen XTS. Great options for longer residual in more severe weather would be either Suspend Polyzone or Cyzmic CS.
