Demon WP Insecticide - Questions & Answers

Demon WP Insecticide will create a barrier of treatment around and inside your home to treat and prevent Palmetto Bugs. Be sure to spray eaves, soffits, window frames, door frames, areas where cables, pipes or wires enter into the structure and any other crack, crevice or gap where insects can harbor.

The date you see on the bottle will be the date it was manufacturered and packaged. If you store the item at room temperature and out of direct sunlight, the shelf will run between 3 and 5 years.

You are able to apply Demon WP any time of year when you see activity or as a preventative treatment as long as the temperature is not at or below freezing when you are treating. Lady bugs are not specifically listed on the label, but Demon WP does treat for very common insects around the structure including spiders, cockroaches, boxelder bugs, fleas, and ants.

Yes, Demon WP will kill houseflies that come in contact with the treated surfaces. Please review our treatment article on How to Get Rid of Flies for a more successful eradication program.

Demon WP Insecticide will carpente bees that come in contact with the treated area.

Demon WP will kill carpenter bees that land on treated surfaces or try to bore into treated surfaces and while it is known to be some what repellent it will not necessarily repel them from the area.

Demon WP does not have a strong lingering odor. You can safely spray Demon WP indoors for spiders and centipedes (be sure to read and follow the product label). You should remove all animals from the room during the application and they should not return until the product has had a chance to dry.  You should not spray areas that the tortoises have direct contact with, keep the application to cracks and crevices around the perimeter of the room. Some species of animals can be very sensitive to any kind of chemical and if your tortoises fall into this category we recommend you contact your veterinarian for further advice.

Demon WP is water soluble and is not a flammable product so there is not any issue with using the product around these areas.

Demon Wp is not labeled to be applied in dishwasher and A/C ducts. It is very important that you read and follow the product label to avoid contaminating sensitive areas. You can use a high quality roach bait gel such as the Advion Roach Bait Gel to treat areas where spraying would not be appropriate (counter tops, cabinets, drawers, around dishwasher, a/c vent). The roaches will consume the bait and then go back to their nesting area and spread the bait which will help eliminate the roaches more quickly than spraying insecticides and IGRs alone. Getting rid of roaches is not a process that only takes only a few hours. Moderate roach infestations can take a few weeks to get rid of and severe infestations can take several months even when using all of the products needed (insecticide, IGR, roach bait) and sanitation is up to par.

Demon WP is labeled for flea control in outdoor settings and will do a great job killing them when used as directed on the Demon WP product label.

Talstar P and Demon WP are both synthetic pyrethroid products and work in a very similar way. The key difference here would be that the Demon WP is a wettable powder and as such it is able to stay on the surface of porous areas allowing insects to come in contact with it a bit better. That being said Demon WP also leaves behind a white powdery residue that is visible on dark surfaces. Talstar P is a concentrated liquid that is odorless, dries clear and is labeled for a huge variety of insects (including roaches) and areas making it a bit more versatile.

Demon WP Insecticide can kill bees, including honey bees.  We do carry Mavrik Perimeter which is non- toxic to bees after it has dried. 

Yes, Demon WP Insecticide can be applied to basebaords and cracks and crevices in bedrooms.  

Yes, the clear plastic package containing the Demon WP will dissolve when placed in water. 

Demon WP is great for all insects, including spiders.  It will do a great job for wolf spiders as well as all other insect control.  You should apply Demon WP once a month for maximum effectiveness. 

The Demon WP will leave behind a powdery residue on the surface that may need to be wiped off before staining. A better option would be Cyonara 9.7 which will dry clear on the surface and not need to be removed before staining. It will do just as good of a job at controlling bees as the Demon WP as well as other insects.

No, Demon WP is not safe to use around fruit trees. You can take a look at our Edible Garden Product page to find a product that is labeled to be used on fruit trees and also labeled for the insect that you are treating for. Please be sure to read the product label before use.

Typically you would want to apply 1 gallon per 1000 square feet of yard.  Each gallon would have one scoop of demon.  So, if your yard was 2000 square feet, you would place two scoops of Demon in the hose end sprayer, then fill the hose end sprayer to the 2 gallon mark with water.  This should apply one scoop per gallon of water over 1000 square feet. 

Demon WP is not a problem to use around pets as long as you apply it according to the label. Once Demon WP is mixed with water it is only strong enough to kill small insects. You would not want to leave the jar of Demon WP open where dogs could get into a large quantity of it. It is always a good idea to keep pets and children out of the area while you are treating. Once the product dries, usually after 30 minutes, it is perfectly fine to allow pets and children back in the area.

Demon WP can be safely sprayed onto anything that water can be safely sprayed onto (we do not know how water safe insulation is). Insects that crawl over areas treated with Demon will be killed. You will need to reapply every 90 days to make sure the product is effective.