I used these traps at 4 different places where I needed to verify the amount of German Cockroach activity before deciding on a treatment. The places were two homes, one restaurant, and one apartment. All of these places had known German Cockroach activity.
The two homes seemed to have light infestations. The restaurant appeared to have a light to moderate infestation. The apartment was extremely bad. I placed a dozen traps in the apartment as the control to see how well the traps work in a known horrible infestation.
I placed eight traps in the homes and a dozen traps in the restaurant.
After two weeks none of the traps in the restaurant had any cockroaches. After one week the traps in the homes were still empty. After one week, the traps in the apartment had caught less than twenty cockroaches. Four of the twelve traps in the infested apartment were empty. With the high number of German Cockroaches in the apartment, I expected all twelve traps to be full.
This batch of traps does not seem to work at all. I stored the traps in my basement, in the original box and plastic bag they came in. I used them within days of receiving them. The traps I carried to the jobs were kept in Ziploc bags and kept under 80 degrees Fahrenheit. The traps could be from a bad batch, or they could be too old or subjected to high temperatures before I received them. Any event, they did not work as expected.
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