So far I have knocked down 99% of a really heavy infestation, they took to the bait immediately and even ate the paint on the cupboards where the bait was sitting, I took a piece of bread and soaked it with the poison spray and stuck it behind the refrigerator and a million roaches took to it, that took care of about 70% of the roaches alone, I also sprayed along the wall boards and anywhere roaches would cross outside of the cupboards, inside the cupboards I set the bait, I probably set at least 50 pea sized bait spots throughout the kitchen area where they are at and they ate it all right away, they haven't really migrated to the rest of the house, but I did spray around the bathrooms. I read somewhere that the poison was supposed to be used within 24 hours when mixed in a sprayer, however due to the small amount needed I used the same spray mixture for three weeks without any noticable degrade in effectiveness, I do let all of the air out of the sprayer so that probably helped a lot and I use two different sprayers, one for the poison and one for the sterilizer. From what I can tell, there are two types of roaches, German and American and it has worked on both really well.
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