Ron from Villa Rica, Ga writes
I have a roach infestation in a rental. The house has been cleaned out. I have sprayed Demand CS & Suspend Polyzone with limited success. I have recently purchased NYGuard & Transport GHP on a recommendation from a friend. Spray all 4 products? If so, what order? All all at once? Your thoughts would be appreciated.
You can apply an insecticide like Transport GHP and a growth regulator like NyGuard IGR at the same time. However, you should not mix multiple insecticides as over-applying products can actually cause insects to avoid the treated areas. You may find it helpful to take a look at our Roach Treatment Guide if you have not already done so.
Answer last updated on: 09/20/2016
