Demon WP is a great product, labeled to leave a residual that can kill cluster flies, lady bugs and a variety of different insects. We also carry a variety of different products you can rotate too as well, like Tempo SC Ultra for example. We recommend reading over our Integrated Pest Management (IPM) article to learn how you can prevent an indoor infestation.
Yes, Demon WP Insecticide may be used as a crack and crevice treatment for general pest control in homes with children. Pets and children should be kept out of the area while the product is being applied and until it has thoroughly dried.
Demon WP Insecticide needs to be used within 24 hours of mixing with water. In the original envelope it has a 5 year shelf life if kept out of extreme temperatures and direct sunlight.
It is always a good practice to alternate products with different active ingredients. Resistance can take a few years to become an issue but you can switch between chemicals every 30 days, on a yearly or two-year basis. A great alternative to Demon WP would be something like Suspend SC. Suspend SC is a general insecticide that is labeled for various pests, including roaches, mosquitoes, ticks, fleas, etc. This can be used indoors and outdoors around the perimeter of your home. We would recommend 30 days between applications of different products.
No, Demon WP Insecticide cannot be applied to porous surfaces. You should direct applications to the lawn/soil/landscaped areas around these areas.
No, Demon WP can be used safely on flowers and ornamentals if applied according to the instructions on the product label.
Demon WP Insecticide are usually not removed after application so that it can continue to kill insects for up to 90 days. It is best to leave it there as long as there is activity.
Once Demon WP is dry (timing can vary), it is okay to put your belongings back into the cabinets. Depending on how thoroughly you sprayed the cabinets and how much residue is left behind, it is up to you if you want to wipe it out as well before replacing your belongings.
Demon WP is not really selective, so unfortunately it is possible that butterflies or bees could be harmed if they were to come into contact with a treated area. To minimize this risk, it is recommended to apply in the early morning or in the evening when these insects are least likely to be foraging, and not to apply to any flowering vegetation.
Demon WP used to come in a bulk jar of wettable powder that you measured out with a measuring scoop. That jar has been continued. The Demon WP envelopes contain the same product but comes in pre-measured packets that you drop into your spray tank. The packet is soluble in water and when the packet disintegrates it releases the wettable powder into the spray tank. Same product, no measuring required now.
The 1 lb. jars of Demon WP Insecticide were discontinued by the EPA. It is only available in the envelope now.
You would want to make sure the area you are treating with Demon WP Insecticide is clean and completely dry before applying the product.
You should not apply Demon WP when you are experiencing any freezing temperatures per the product label.
Demon WP will kill any june bugs or beetles that land on or crawl over a treated surface its been applied to. June bugs and other similar pests like Japanese Beetles, are part of the grub life cycle. The best way to prevent June bugs and beetles is to treat for grubs twice a year to control as many as possible before they emerge from the soil and complete their life cycle as a beetle. You can review our Grub Control Guide to see the best products and timing for treating the yard and reducing the overall numbers that you may have to take care of with the Demon.
Demon WP actually is not labeled to treat for carpet beetles indoors, but it will help to combat a variety of other pests listed on the product label. A great IGR for carpet beetles would be Gentrol IGR. You can mix this concentrate with an insecticide and apply them at the same time. A great choice for insecticide to use with Gentrol as a crack and crevice treatment would be Suspend SC, which is a liquid concentrate. Be sure to vacuum thoroughly and often when treating for carpet beetles to help pick up adults, eggs, and debris that they may feed on such as animal dander.
Demon WP Insecticide will only kill insects after they have hatched from the eggs. Most insecticides cannot penetrate the eggs.
Demon WP is good for 3-5 years stored unopened and out of extreme temperatures. The date stamped on the package is the manufacturered/release date so the product woud be good 3-5 years from that date.
Demon WP Insecticide should not be applied to any manure or compost that would be used for edibles.
No, Demon WP should not be applied any type of animal feed that will be ingested. Demon WP is meant to be sprayed around the outside perimeter of the buildings and structures, and inside as a crack and crevice spray.
There is no valid reason to mix Demon Max and Demon WP together. Demon Max is a synthetic pyrethroid and Demon WP already contains a synthetic pyrethroid, so there would be nothing to gain by mixing these products together. Making a pesticide too strong can actually backfire. Areas that are treated with this overly concentrated spray will be repellent and insects will simply avoid the treated areas prolonging the infestation.
