Dd from Independence, Mo writes
The amount of time it takes to see results after applying Onslaught FastCap Spider and Scorpion Insecticide can vary depending on a number of factors, such as they type of insect(s) you are treating, what stage of its life cycle the insect is in, the health of the insect, and how long it spent in contact with a treated area. It can take anywhere from a few minutes to a few hours for an insect to die.
Answer last updated on: 05/26/2017