Why a single cockroach treatment is rarely effective

A common question that we get asked is “why can’t we just treat the cockroaches once and be done with it?”

To answer that we need to understand the lifecycle of cockroaches and the environmental impacts on cockroach treatments.

Cockroach Lifecycle

Most cockroaches grow their eggs in a sac called an ootheca, which is attached to the mother's abdomen. The ootheca is an impermeable sac that protects the eggs from external threats. So while the eggs remain in the ootheca, no chemical treatment currently available can penetrate it.

Additionally, if a mother carrying an ootheca feels she’s in danger, such as when she comes into contact with pesticides, she’ll drop the ootheca in order to protect it. If it’s left in favourable conditions (a warm, moist and protected area) the eggs can continue to develop and hatch when ready. A treatment that attacks the mother while she’s breeding is not guaranteed to kill her offspring.

Therefore, additional treatments are necessary at monthly intervals to kill newly hatched nymphs or to prevent reinfestation.

Environmental Factors

The long-term effectiveness of a residual cockroach treatment is also impacted by a number of other factors:

  • The type of surface to which it is applied will impact its adherence to the surface
  • Temperature and humidity of the area can reduce the longevity of the treatment
  • Cleaning programs or every-day use can wear or rub off the treatment
  • Bad sanitation or housekeeping practices can attract more cockroaches to the area

Some of these factors are unavoidable, hence the need for additional treatments to control current populations of cockroaches and prevent reinfestation.

Contact one of our experts to speak to them about your environment and cockroach treatment program.

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