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Demon WP Insecticide

Walt Cline - Pest Control Professional Pro Tip: "Demon WP packs are easy to use, just mix them into water. Mix well in your sprayer, and use the finished solution within a couple of days. Demon was a good German Roach killer, but they seem resistant to it now. Gel and powder baits are the best choices for the German Roach.

Cyper WSP ( packets) have the same label as Demon WP but are more economical. Both Demon WP and Cyper WSP are classified as a long-term residual insecticides.

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Demon WP Insecticide
84 Review(s)

Availability: In stock

Prop65 California Proposition 65 WARNING

Demon  WP - Envelopes

Demon WP - 1 Envelope - (4 x 0.3 oz) packets

  • Buy 2 for $8.95 each and save 26%
  • Buy 12 for $8.50 each and save 30%
Demon  WP - Envelopes

Demon WP - 2 Envelopes - (8 x 0.3 oz) packets + B&G Dura 10 PV 1 Gallon Sprayer


Customer Reviews 10 item(s)

1-10 of 84

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Best product for roaches
Best there is to kill roaches, been using for 20 yrs, won’t be disappointed.
Review by Donna / (Posted on 7/12/2020)
Only chemical I use since 1993. Works on every type of insect.
Review by Matt / (Posted on 7/3/2020)
Works great
Had a carpenter bee problem and used this spray along with a bee trap. Together they got rid of all the bees. This spray killed the most, I just sprayed it into and around the holes and found the bees dropping dead the next few days.
Review by hansmon / (Posted on 7/3/2020)
great product
I have used the Demon for a long time. I try to switch back and forth from the dry packets to the liquid as I was advised. Demon is so effective for the "water bugs". I use it inside and out around doors, windows and foundation. The residue lasts for a long time. I only have to spray once a year.
Review by Mom / (Posted on 3/11/2020)
Best of the best
I have been using this Demon for many years. We have a lot of water bugs coming out in the spring. I spray inside and outside including around my windows and doors. I was told by an exterminator to switch back and forth between the powder and liquid. I really don't have to spray but once a year. The only bugs I see are the dead ones. Can't really say anything but great about this product.
Review by Knock em dead / (Posted on 2/1/2020)
THE BEST Product!
This product is the BEST!!! Don't buy anything from the big box stores. It won't work. This product is the only one we buy. We use it outside around the perimeter of the house, inside the garage, and even along our wooden fence where webs form along the posts of the fence. Our pests currently are spiders and millipedes in the house/garage. This product gets rid of those and every other kind of bug. You will see dead bugs all along the perimeter of your home in just a day or sooner after using this product. it works that fast! But you will need to reapply after it rains as it will get washed away.
Review by LeeA / (Posted on 10/5/2019)
Best roach killer ever
Started using in GA when a roommate brought roaches into home, Used for years, don’t want to ever use anything else, got brother and sister a believer, now my son just called to get name for his neighbor. I knew a friend used it on his house and his mother’s and they never had roaches. So, when I bought something at store that absolutely did not work after all the trouble I went to, I thought about asking what my friend used. Great to have a product that actually works.
Review by Donna / (Posted on 5/30/2019)
Demon WP Insecticide
Great all around home insecticide. I've used it for years now, with no complaints.
Review by Mark / (Posted on 5/17/2019)
Spider killer
Easy to use, great killer
Review by Jenny / (Posted on 1/10/2019)
Great product.
They mail product to me. I am a senior woman n can do it myself. Been doing this over 10 years. And affordable.
Review by Gigi / (Posted on 11/5/2018)

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