Liz from Georgia writes
You should not spray products like Martins IG Regulator or Viper Insecticide on top of boric acid powder or any other dust. You will want to keep sprays and dusts, granules, or baits in separate areas so that you do not interfere with the dust. A boric acid dust or bait would not be effective if it has been sprayed with an insecticide. If you are treating for roaches, then be sure to keeps spray low and bait high. We have more tips in ourRoach Treatment Guide here .
Answer last updated on: 10/11/2019