Onslaught Insecticide - Questions & Answers

The Onslaught Insecticide should be stored at moderate temperatures and shouldn't freeze. However, if freezing should occur then dethaw at room temperature. Do not heat to speed up the dethaw process. It is hard to say whether the Onslaught Insecticide needs to be replaced besides decreased efficiency.

Onslaught is a great product for chigger control. Treatments for chiggers should begin in April/May and could need to continue through the summer as new chiggers move into the area. Treating the entire lawn is of little benefit because chiggers avoid direct sunlight and normally will not infest areas that are mowed or otherwise well maintained. Focus treatment on the unkempt areas of the lawn and lawn edge. You can also use Onslaught to do a barrier treatment around the outside of your home and in your crawl space to stop pests from moving indoors.

Onslaught is a great product for control of yellow jackets. You could apply it via a hose-end sprayer. It should be diluted 1oz per gallon of water. Another great way to treat for yellow jackets is by applying an insecticidal dust such as Tempo to their nest. Night time is the best time to treat because that is when yellow jackets are less active.

Onslaught Insecticide cannot be used on any pasture area or anywhere that animals graze, even after dry.

You will mix 1.5 oz of Onslaught and 4ml of NyGuard to 1.5 gallons of water to treat 1500 sq ft. You will apply once every two weeks (minimum of two treatments). Please take a few moments to review our Flea Treatment Article for additional helpful information.

Onslaught will only kill the leaf cutter ants that come incontact with the treated areas. Leaf cutter ants can have very large colonies, making it difficult to eliminate. We recommend using Maxforce Complete Granular Bait. Maxforce Complete contains hydramethylnon which is effective, though they will usually eliminate only about 30% of a large colony in one treatment and will need to be reapplied several times.  Deltagard granules   would also be a recommended product. The product label recommends treating the mound directly and lightly watering the granules in.

Onslaught is safe to use in a home where children reside as long as you apply it according to the label and the children are out of the area while the product is applied, until it has dried. There are no extra precautions that need to be taken before re-entry.

Biting midges do generally not enter structures, but midges are small enough to get through 16 mesh screens. Getting mesh screens with a higher number can keep these and other very tiny insects out of your home. Since non-biting midges are attracted to lights, draw your shades at night and wait as long as possible to turn on exterior lights to keep them away from your home. Onslaught is a liquid insecticide labeled for midges and can be used inside and outside the home. Spraying Onslaught on window screens, doors, bushes, and plants around your home can act as midge repellant to keep midges away. Inside the home we recommend thoroughly vacumming the entire home. Dispose of the contents immediately in trash bag and take outside. Apply 1oz of Onslaught per gallon of water as a coarse, wet spray to surfaces where these pests are normally found. Treat floors, baseboards, around doors and windows, in attics, crawl spaces, eaves, corners, closets, walls, utility pipes, storage areas, and all cracks and crevices. Treat underneath sinks, dishwashers, refrigerators, stoves, the underside of shelves, drawers, cabinets, areas behind pipes, and in all places where these insects shelter. Contact as many insects as possible with direct spray. Repeat applications as needed, but do not exceed more than one application every seven days. Continue to vacuum daily in between treatments.

Yes, Onslaught Insecticide is labeled for box elder bugs. 

Onslaught is a micro-encapsulated product which means it is a time released formula and can take a little longer to kill insects than other products. Ants can take several hours to a day or so before they die after coming into contact with treated areas. Onslaught will not stop ants from coming into an area but it will kill the ants that do. Onslaught does not transfer back to the colony. We always recommend that you use an ant bait gel or granule in addition to the insecticide spray since ant colonies can be very large and they can keep sending out worker ants. The bait will be carried back to the colony and fed to the other ants and this will help speed up the ant elimination. We also recommend spraying outdoors around the perimeter of your home to eliminate ants before they move indoors.

Onslaught will kill mites in general, but the problem with mites is finding the breeding source.  Onslaught may provide some relief, however many times mites will breed under carpet or in wall voids, where you cannot spray.  This is why treating for mites is very difficult and usually requires multiple products and lots of vacuuming.  

You can apply monthly on the exterior of the structure for control but the nesting sites that are near the structure should be removed to fully eliminate them. The source of the infestation is very important and is the key to getting rid of the mites for good. Thoroughly apply as a fine particle broadcast spray using a hand pump sprayer to infested rugs and carpets and other cracks and crevices around the perimeter of each room. Put all clothes through the dryer on high heat to help kill mites and their eggs. We have had many customers use the above recommendations with great success. Most customers report that it can take several months to get rid of all of the mites.

Treating carpets for general pests is not needed.  Only when you are dealing with a pest like fleas that infest carpets would you need to do so.  For general pest control, treatments should be directed to cracks and crevices inside as you should also apply a barrier outside around the perimeter.  We have a great video here that shows where to spray for perimeter and interior spraying.  Onslaught is a great option for them and is labeled for over 200 pests.

Yes, Onslaught Insecticide is labeled for cluster flies. It is mixed at 0.5-1 fl oz per gallon of water per 1,000 sq ft. 

If this has been an ongoing problem we would first recommend to get the pest identified by an entomologist. If it's recent and you've had the pest identified, then we would recommend that you use Onslaught Insecticide. Onslaught is specifically labeled for mites.  You will use 0.5 oz per gallon of water around baseboards and cracks and crevices. Before your application, it is strongly recommended to thoroughly clean and vacuum the areas of activity first.

Yes. Onslaught is labeled for clothes moths and works very well for this pest. It is very important to find the source(s) of the clothes moths and thoroughly clean the item or dispose of it entirely. Failure to do so will lead to re-infestation as the larva will usually remain hidden and continue to develop into adults.

According to the Actisol manufacturer, you can use Onslaught in the machine. They recommend that you dilute the Onslaught in a seperate container and then add it to the Actisol. Because Onslaught is water based, they recommend that you thoroughly clean the machine and dry it after use.  For further information on the types of insecticides that you can use with the Actisol, you should contact the manufacturer at 877-228-476.

Yes, Onslaught Insecticide can be applied in crawl spaces.  Please see the product label for specific application instructions. 

Yes, Onslaught Insecticide can be mixed at 0.5-1 fluid ounce per gallon of water and may be applied outdoors, in a crawl space or indoors as a crack and crevice treatment. 

You can expect Onslaught to last for about 4 weeks outdoors for mosquito and gnat control.