Joseph writes
Essentria IC3 Insecticide Concentrate and Suspend SC are both insecticides and there would be no valid reason to use them mixed together, one is just natural and the other synthetic. Applying multiple insecticides together does not make either work better and can actually have negative effects of making an area more repellent where insects will avoid the treated areas and neither can do the job of killing them then. Instead it would be best to use either one along with a roach bait and insect growth regulator as directed in our guide here for roach treatments.
Answer last updated on: 02/27/2017