Onslaught FastCap is a microencapsulated suspension concentrate that is diluted with water before use in a compression, hose-end or backpack sprayer. The formula combines a pyrethroid active ingredient with a knockdown agent and a synergist to deliver quick action along with lasting residual control on treated surfaces. It is labeled for surface, spot and crack-and-crevice applications, as well as injection into wall voids, and can be used in and around homes, commercial structures, food and non-food handling areas, unoccupied livestock facilities, turf, ornamentals and landscaping. The bottle should be shaken well before measuring out the concentrate, which is then agitated into a partially filled spray tank before topping off with the remaining water. Application equipment such as pump sprayers or injector tools spreads the diluted product onto baseboards, cracks, crevices and other pest harborage areas. The product carries an EPA registration and a CAUTION signal word, and label directions should be followed for mixing ratios and site-specific use restrictions.