Stephen from Des Moines, Ia writes
Both products have two different active ingredients. They are both labeled for various insects. Onslaught Fast Cap has the additional active ingredients of Prallethrin and Piperonyl Butoxide (PBO) that provide fast-acting control of pests. FastCap is like having two products in one without having to worry about mixing them.
Answer last updated on: 03/15/2016