Rating:
97% of 100
SKU
demonwpgroup
Demon WP Insecticide kills large roaches, spiders, crickets and more. Demon WP Insecticide has been a number one seller for many years due to it's convenience of use. Simply drop the packets in the envelope in water (they dissolve). Demon WP Insecticide contains cypermethrin 40% and works well for a variety of insects, lasting up to 3 months.
Pro Tips
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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Customer Reviews

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  1. Best product for roaches
    Quality
    100%
    Best there is to kill roaches, been using for 20 yrs, won’t be disappointed.

    Review by Donna

    Posted on

  2. Owner
    Quality
    100%
    Only chemical I use since 1993. Works on every type of insect.

    Review by Matt

    Posted on

  3. Works great
    Quality
    100%
    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

  4. great product
    Quality
    100%
    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

  5. Best of the best
    Quality
    100%
    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

  6. THE BEST Product!
    Quality
    100%
    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

  7. Best roach killer ever
    Quality
    100%
    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

  8. Demon WP Insecticide
    Quality
    100%
    Great all around home insecticide. I've used it for years now, with no complaints.

    Review by Mark

    Posted on

  9. Spider killer
    Quality
    100%
    Easy to use, great killer

    Review by Jenny

    Posted on

  10. Great product.
    Quality
    100%
    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

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