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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
79 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)

51-60 of 79

Demon is the best
Been using Demon for over 30 yrs. Still the best stuff I've ever used.
Review by John / (Posted on 6/18/2014)
Well pleased with product.
We have used this product for years and are very happy with the results. Only bugs we see are DEAD ones.
Review by BLT / (Posted on 6/16/2014)
So so
I have no fleas spiders, roaches, wasps , but has not worked as well as I was hoping for the fire ants, that are a major re occurring problem on the lawn, front and back, I think I will try a new product

DIY RESPONSE: Demon can be used on Fire Ants, however you have to apply it using the drench method. If this doesn't work acephate products work well against fire ants: http://store.doyourownpestcontrol.com/active-ingredients/acephate-insecticide-products

Fire Ants (Mounds):
For individual fire ant mounds, apply DEMON WP as a
drench. Gently sprinkle (watering can) a total of 1 gallon over the surface
of mounds up to 12 inches in diameter and 2 gallons for larger mounds.
Thoroughly wet mound and surrounding area. Treat new mounds as they
appear. Pressurized sprays may disturb the ants and cause migration. If
possible, applications should be made on warm days after recent rainfall. All
colonies in the vicinity should be treated, including those that have not yet
constructed a mound.
Review by Puccinismum / (Posted on 6/10/2014)
Demon Gets the Job Done Right
Been using on a friend's recommendation, when I had a problem with roaches. I remembered a friend never had a problem and also used on his mother's home, that I had been to many times, so I asked what he used. Now, my brother, sister and a friend wouldn't use anything else. My brother lives in Florida, always had a problem with the large roaches flying in from outside, and I was afraid to stay there. After I sprayed his house inside and out, the only roach you will ever see, if any, is a dead one. Yea Demon!
Review by Donna / (Posted on 5/26/2014)
Half bug will travel
Bugs come out from hiding and die. This product is very good for that.

Prompt delivery by Do-it-Yourself is great.
Review by pacaarmijo / (Posted on 3/25/2014)
good product
We have used Demon WP for years and would encourage anyone to use it as a self pest control product.
Review by Chickadee / (Posted on 10/26/2013)
Bugs are running scared
I finished application of 1 gallon of Demon WP a few minutes ago and the giant nasty american cockroaches that plague Georgia are running away from the house in droves. I have a cedar sided home with a partial crawlspace and the roaches have been horrible this year. I'm finding the twitching little b@$t@rds all over the basement and outside in the pinestraw. I will definitely buy Demon WP again. I was very pleased and surprised to find the little $10 pack I purchased contained multiple application packets as I was expecting only enough for one application. DIYPC shipped my purchase the same day and it arrived within 48 hours! Awesome product, Awesome Customer Service!
Review by aric / (Posted on 8/10/2013)
Still Killing the bugs
Been using this stuff for years. Works great, easy to mix
Review by Bruce / (Posted on 8/7/2013)
Beyond Awesome
When we moved into our new farm house we quickly discovered that we had a big wasp problem. I mean we had thousands of them.

We tried everything without success and finally we stumbled across Demon WP. Not only did it take care of the wasps in kills but also spiders, ants, you name it.
Review by Scott in SC / (Posted on 8/5/2013)
More effective than home depot sprays
I had a gallon of the home defense bug spray and used it two weeks ago. Saw some dead roaches around. Tried this on a friends recommendation and had triple the roaches on their backs. Will have to wait to see how long it lasts. The other raters make me hopeful.
Review by Tim / (Posted on 7/21/2013)

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