Which of the following is NOT a primary reason for bait failure with cockroaches?

High humidity levels are not typically considered a primary reason for bait failure with cockroaches. While humidity can influence cockroach behavior and overall pest management strategies, it's not directly linked to the effectiveness of bait itself. Cockroaches are highly adaptable and can thrive in various humidity levels; therefore, excess humidity may not significantly affect their interaction with bait.

On the other hand, poor sanitation creates an environment where cockroaches can find alternative food sources, thus diminishing the likelihood that they will seek out and consume the bait. Inadequate bait placement can lead to situations where cockroaches simply do not encounter the bait, resulting in minimal exposure and reduced effectiveness. Bait aversion occurs when cockroaches develop a resistance or reluctance to consume certain bait formulations, further contributing to bait failure. Each of these reasons directly impacts the efficacy of bait, whereas high humidity does not diminish the bait’s appeal or accessibility in the same manner.