Demon WP Insecticide - Questions & Answers

Demon WP will kill insects in anywhere from a few minutes to several hours, depending on the size and health of the insect and how much active ingredient they contact. Please take a few moments to review our Roach Treatment Guide for more tips on how to eradicate this pest successfully. 

Fleas will die within minutes to an hour after contact with Demon WP Insecticide.  We also recommend to mix in a n IGR like Nyguard to help break down the reproductive cycle.

The biggest factor in pesticides not lasting a long time is definitely UV light.  Each product will have different life spans depending on whether it is a powder like Demon WP, or liquid like our popular Talstar P product. Demon WP and other wettable powders should give a good 30 day residual even in direct sunlight. There are some liquid that will last 60 to 90 days, but they do not have the punch that Demon WP has. Treating weekly might be a little much, but since stink bugs are so bad right now we would recommend treating every 2 to 3 weeks at least since the numbers of stink bugs are so high right now.

We recommend that you contact your local vet and provide the MSDS to them upon taking your dog in to be checked. Explain what happened and the name of the product that they got into. Symptoms will vary.

Demon WP is not labeled for indoor flea control.  You would want to use a product such as Precor 2000 Plus Premise Spray. This product is easy to use and is safe to broadcast all over your floor surface. Precor 2000 Plus Premise Spray will kill adult fleas but also stop the reproductive cycle of those flease preventing them from laying more eggs. You would want to keep your baby and all children out of the treatment area until it dries completely. It normally takes a couple of hours to full dry. Once it has dried it is safe for you to bring your baby back into the treated area.

It is perfectly normal to keep seeing fleas for several weeks after the initial treatment. This is because of the natural life cycle of the flea and you are now seeing newly hatched fleas. Most folks find they have to do between 2-4 treatments to get rid of the fleas for good. We do not recommend using Demon WP indoors for flea control as it is not labeled for broadcast sprays indoors.

Demon WP Insecticide is pet safe as long as you follow the manufactuers labeled instrunctions.  Remove any animals from the areas being treated and keep them out of those areas until the product has had ample time to dry.  We suggest a minimum of a couple hours.  If your pet came in contact with the insecticide before it was dry and they are having a reaction we suggest you immediately contact your vetanarian and have your pet checked out.

As long as you read and follow the Demon WP product label there should be no health or safety issues for a pregnant woman or anyone else. Only people that are applying the products should be present at the time of the treatment, and all other adults, children and pets should be out of the room. Everyone can re-enter the treated room as soon as the area is dry and the room has been vented, which usually takes about an hour. 

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.

It is not necessary to mix two insecticides together. What you could do to ensure that the product works faster is use ExciteR. It can be mixed with either Demon WP or Onslaught FastCap Spider and Scorpion Insecticide. ExciteR will provide a quicker knockdown when mixed with an insecticide. If used alone, the residual is not as long.