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ENY989: Assessment-Based Pest Management of German Cockroaches

Figure 10. Knowing how to “read” a monitor is critical to IPM success. This monitor contains several stages of nymphs as well as adults, which indicates that there is a severe German cockroach infestation. Monitors can sometimes tell you from what direction the cockroaches are coming, and they are useful during the evaluation process to confirm that your treatment is effective as the number of insects trapped in the monitors decreases.