


Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Finland.
🛡️ Own your space—no bugs allowed, no compromises!
Demon Max 2500 is a professional-grade, EPA-approved liquid insecticide designed for broad-spectrum control of over 30 insect species. Its fast-acting formula delivers visible knockdown within 48 hours and offers versatile application indoors and outdoors, including crack-and-crevice and perimeter treatments. With long-lasting effects and easy application, it’s the go-to solution for millennial managers seeking a pest-free home and yard without the hassle of professional exterminators.
| ASIN | B01G49QTLO |
| Best Sellers Rank | #229,065 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #247 in Beneficial Pest Control Insects |
| Brand | Syngenta |
| Brand Name | Syngenta |
| Customer Reviews | 4.6 out of 5 stars 627 Reviews |
| Item Form | Liquid |
| Item Type Name | bug killer |
| Item Weight | 16 Ounces |
| Liquid Volume | 16 Fluid Ounces |
| Manufacturer | Syngenta |
| Model Number | 2500 |
| Part Number | 3553 |
| Specification Met | EPA |
| Target Species | Insects |
| UPC | 702941250000 |
| Unit Count | 1.0 Count |
A**.
Powerful, Reliable, and Long-Lasting Results
This bug killer works exactly as advertised. It’s strong enough to handle everything from ants and roaches to tougher outdoor pests, and once applied, the effect lasts for weeks. I noticed a difference almost immediately—areas that were crawling before were clear within a day or two. The dark brown formula mixes and applies easily, and it doesn’t leave behind strong odors or messy residue. I used it both indoors and outdoors, and it held up well even after some rain. A little goes a long way, so the container should last through multiple treatments. It’s professional strength without the need to call in an exterminator, making it a cost-effective solution for keeping the house and yard pest-free.
C**F
My father used to own a pest control business and this was his main product
For years my father owned a major pest control company near Chicago and used this product for many applications, so when I moved to Florida and the house we bought had ants that the consumer chemicals from the hardware store seemed to just attract more of, I looked online trying to find a way to buy this. This used to require a pest control license to spray. This is the real deal, the “I don’t want to pay a monthly service to someone when I can do it myself” type stuff. Now you need to understand that you will still see ants/bugs for a couple to 3 weeks but they will mostly be dead or dying. It’s a process that takes time. After that you should not see any more. I treated my house by spraying the baseboards, around cabinets, behind the stove and refrigerator, around the windows and in the corners on the ceiling. The next morning there were dead ant everywhere, this continued until there was no ants alive anywhere. I also treated around the outside of the house, around the pool and fence. I no longer seeing ants, spiders or anything that isn’t flying around. This is easy to mix, squeeze the bottle to fill up the side with the measurements, it mixes into one gallon and you are set. This is enough to last years and will keep you from ever needing to pay and exterminator again. Some people may not like the smell but it goes away quickly, to me, it smells like growing up in the 90s because I have smelled it my whole life. But this, you will thank me later
K**R
It works!
It works great! I live in an apartment building and someone moved in and bought roaches with them. The landlord had someone come in and spray twice. It got rid of most of them. I read the reviews on the product and decided this would be best. I haven't seen anything since applying it. When you first apply it make sure you leave for about 3 hours if you have respiratory issues. The smell is strong at first. It's definitely worth your money!
S**A
Great product, Strong smell that leaves relatively quick
I recently got my old dog back from my ex. ( Dog is 12 now) He was severely infested with fleas. My mom has 2 dogs that ended up getting fleas pretty bad also. I couldn't get anything to treat the yard and it actually work. I got this stuff ordered and I sprayed EVERY INCH of my yard and around inside my house. This stuff (along with their flea meds from the vet) took care of the flea problem within 48 hours. We also have HORRIBLE mosquitos. You can't go in our back yard without being eaten alive. (15+ bites in less than 10 minutes, NO JOKE.) While this didn't eliminate our mosquito problem immediately (we have standing water that is hard for us to get rid of) it has DEFINITELY decreased the population a LOT. It's kept the HUGE flying roaches from the areas we sit outside which has been wonderful in these hot and humid summer days. I definitely recommend this to anyone who needs a great insecticide. The smell is strong for a good 20-30 minutes, but the smell isn't too overbearing.
A**E
Best product I have ever used!
We currently live in a rental townhome. We have for the past three years and didn’t even notice that we were having issues up until the last six months are adjoining neighbors are not the best kept clean type of neighbors and we started noticing baby roaches up until I purchased this product, I was trying to go the natural route being that we have a young child. I don’t like to have a lot of chemicals in my home but the natural methods were not working so called a local exterminator of course and they sprayed got the report and said that we had a German cockroach Infestation pretty much secluded to the kitchen of our home. The price that the exterminating company wanted to charge to kill the colony of the cockroaches was $150 and then $75 for each occurrence afterwards which was astronomical for our budget. My husband‘s best friend used this product when he was a landlord for one of his homes and said it worked great so we purchased it. I wish we had photographs. My husband used one when my son and I were asleep and he said the colony came out he couldn’t even count how many it was well over 50 they were, unfortunately, more than likely coming from the compressor of the refrigerator . Remember, this is a rental calling. Our landlord was not going to help me that he’s out of country and it’s a nice place but the pests had to be taken care of of this product goes a long way You mix this with water according to the directions and it works on contact. It stuns the critters and they die instantly. The smell is there, but it’s not that bad and it usually dissipates pretty quickly. We keep fans running on high and exhaust fan in the kitchen on high we crack open our sliding glass door alleviates the odor. we have made it a point to subsequently spray the kitchen area once a week until we hopefully do not see any more German roaches and so far so good we’ve gone from seeing dozens to a rare few, but they’re not completely gone yet which is why I am reading this as a four. I will come back in the next month or so with an update on the review.
D**R
Powerful bug and spider and Scorpion killer
Demon is a strong bug and spider killer. We use it for scorpions too. I'm not sure why it took a couple of weeks to get here ... said so when I ordered it.
F**R
BEST MOSQUITO CONTROL
I do not usually post a review but FYI - FLORIDA Resident ...this is the best product I have ever used! We have been using this since JUNE 2020. Everyone knows if you live in Florida the mosquitoes have you for dinner. All my life! Within 1 week of using this our life outdoors changed! We still are amazed! And so far our Lizards have not been effected....and we have ALOT LOL. To put in perspective... We have 100 year old oaks all around us.... A Lake a 1/4 mike away and neighbors who well seem to like to incubate mosquitoes ... We could not open a window or walk outside anytime of the day and not get a bite. OFF was our best friend and I was seriously considering buying stock in it. DEEP WOODS OFF. I have sprayed yard and perimeter of entire house 2 times..... not a bite since... Use as directed no need to overdo.... (I did spray a bit more the after a large downpour the day after my 2nd spray...) if you walk past the property line aprox 20 feet into neighbors yard you get eat up ... It really is amazing We no longer need the off at all ! I recommend raking any dead foliage around any fence line and of course all those flower pots with saucers..... Loose the saucer ! It rains all the time in FL u don't need them to breed the mosquitoes..... Make sure you cover your bird bath and rinse well just in case! I have butterflies and bees Galore this has not affected my good insects so far. Be smart and spray at the right times! Again this killed mosquitos flying and has seem to taken care of the larvae for us as well! Good Luck and Go Outside take back your yard! Put a force field around you and your family!
P**E
Killed spiders and wood roaches
Used inside and outside. Haven't seen any bugs or spiders since treating.
Trustpilot
2 weeks ago
1 month ago