The answer to 'how long does cockroach treatment last' is that the effectiveness of cockroach treatment can vary, but typically lasts for several months. Cockroach treatments work by applying insecticides that kill the existing cockroaches and prevent new infestations for a period of time.
The length of time the treatment is effective depends on factors like the type of insecticide used, the severity of the cockroach infestation, and how well the treatment was applied. Most professional cockroach treatments will provide 3-6 months of control before needing to be reapplied. However, in severe infestations or high-risk areas, more frequent treatments may be necessary.