I have been spraying a restaurant for 6 months using Suspend SC inside and Cyper WP outside and really have had no problems until now. The establishment is getting overrun with roaches coming out of their walls and out of the thermostat. I have baited the areas with Maxforce and I have used CB-80 and dusted the wall voids with DeltaDust just in the area of the thermostat. I was wondering if there is a different approach I should be taking or maybe a different product.
I still maintain that the insecticide active ingredients we currently use, and which you have been using, are effective at killing German roaches. The important key is that the roach and the active ingredient must meet and stay in contact with each other long enough to get that lethal dose into the roach, and the best way to accomplish this is to place the active ingredient directly into the places where the roaches hide during the day - cracks, crevices, holes, and voids. In a restaurant these kinds of harborage could be in a great many locations, and perhaps your focus on that thermostat where you (or your customer) have seen them emerging is causing you to overlook other important places.
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