While Supplies Last! Buy 3 Jugs, Get the 4th Free. Prescription Treatment brand Cy-Kick CS Controlled Release Cyfluthrin is the multi-use insecticide designed for professionals like yourself who want a product that works just as smart as you do. It dishes out 90 days of full-throttle, broad-spectrum killing power, controlling insects inside and outside, on the toughest areas and surfaces. The difference is SmartCap™ microencapsulation technology that protects cyfluthrin to create a long residual and a mobile lethal dose of this broad-spectrum active ingredient that insects easily pick up. Cy-Kick CS has the high-powered performance and flexibility you need, at a competitive price. And it’s much less likely to cause skin irritation than some other products.