Onslaught FASTCAP - Pint

Onslaught FASTCAP - Pint

Regular price $58.00 $58.00

Target Pest: Cockroaches, Spiders, and Scorpions

Easy to use bottle:

Onslaught is delivered to you in a pint size, plastic bottle that includes an easy to use measuring dispensing chamber within the bottle. Dependent upon the threat of infestation within or around your home, you will use the measuring guides at the top of the bottle to pour out either a low or high use rate.
 Onslaught FastCap is a microencapsulated suspension concentrate containing the following active ingredients- Esfenvalerate, Prallethrin, and Piperonyl butoxide. Microencapsulated products allow for the active ingredient to break down slower, prolonging its effects and its safer for the applicators to use. Esfenvalerate is the microencapsulated active in Onslaught that helps keep a residual wherever you spray and Prallethrin, a member of the pyrethroid class of insecticides, is the active which allows for quick knockdown. Both effect the cockroaches nervous system. The Piperonyl Butoxide in Onslaught has no insecticidal qualities except that it’s a synergist which helps to increase the efficacy of the two previous mentioned active ingredients. This product is true to its name "Fastcap" meaning that you will see results immediately upon use; furthermore, due to the microencapsulated active, you will continue to see results for up to 12 months!

Gear Needed:

Onslaught Fastcap is labeled as a caution product. The National Pesticide Information Center deems caution as a product that has been deemed slightly toxic if eaten, absorbed through the skin, inhaled, or it causes slight eye or skin irritation.  Wear gloves when spraying this product and other protective clothing. Protective eyewear is recommended, but not required. A respirator is not required unless exposure limits are exceed or irritation is experienced.

When spraying Onslaught Fastcap you will need at least a 1 gallon sprayer (Quick Tip: Many use a B&G 1 gallon sprayer)

Where to use?

Onslaught Fastcap can be used both indoors, outdoors, and in the following food and non-food areas such as: homes, schools, warehouses, office buildings, apartment buildings, theaters, hotels, industrial buildings, motels, kennels, livestock housing, food processing plant, food services establishments, restaurants, back yards, lawns, trees, ornamental landscaping, and much more. Check the label before applying to ensure you are using this product properly. When using outdoors its important to not spray in or near fishponds or other bodies of water. Do not treat an area to the point of runoff and do not spray during the rain.
How to apply?
For fast action and residual effects its important to apply against pests listed on the the label and when applied as surface or spot treatments, or crack/crevice sprays, or on turf and landscaping to use the appropriate amount and method. Onslaught Fastcap can be sprayed on any surface that will not be stained by water.
How to mix in a one gallon sprayer?
First read through the label and plan how much product will be necessary for the type of infestation or prevention of the property you are treating. Then shake the Onslaught Fastcap bottle prior to mixing. The Onslaught Fastcap bottle is a squeeze and pour bottle which allows you to pour accurate amounts of the product into the sprayer. First place half a gallon of water into the sprayer then pour the Onslaught Fastcap measured contents into the sprayer. Agitate the mixture of water and Onslaught Fastcap , then slowly continue to fill up the sprayer with the second half gallon of water. After all contents have been added to the sprayer, be sure the contents have been well mixed. *Don't overfill the sprayer, follow directions on what the max amount of contents should be in the sprayer of your choice
Once mixed the product is only good for that day. Do not allow it to stand overnight. The product within the bottle is effective for up to 3 years in the original commercial packaging. Keep the container tightly closed in a dry and well ventilated area. Keep out of the reach of children and pets.
Is this safe around children or pets? When spraying in an area do not let children or pets near until after the product is fully dry. It could take up to 2 hours.
Will this product stain carpet, drapery, or other textiles? No, but first test in a certain area to ensure it does not stain before treating the entire area. As always read the label and follow the manufacturer's directions.


To avoid wastes, use all material in this container by application according to label directions. If wastes cannot be avoided, offer remaining product to a waste disposal facility or pesticide disposal program.

Manufacturer MGK®
Primary Pest Spiders
Utility  Concentrated Liquid
Active Ingredient Esfenvalerate, Prallethrin, Piperonyl Butoxide, Other Ingredients
Composition 6.40%, 1.60%, 8.00%, 84.00%
Container Size 1 pint
Case Amount 6x1 gallon
Application Amount See label for details.


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