Although not any longer, I have been in the pest control industry for 18 years both as an applicator and an owner. I have seen my share of bad infestations of every type of insect Texas has to offer. My neighbor had what I would call a moderate infestation of German Roaches and I used the required dosage of nyguard in my B&G along with Demand (CS), had my neighbor remove everything from his Kitchen, pull the fridge out, and the oven as well bc the kitchen was the main source of the problem. I methodically treated the kitchen area along with all the rest of his home and it has been over 2 months since I first treated it and one month since I treated it a second time and I gotta tell you, I'm not seeing much of a change. I'm going to give this a bit longer to show me some progress, otherwise I just assume attacking them using the max force products I've always used in the past.