The answer to 'how long does extermination treatment last' is that the duration of an extermination treatment can vary depending on the type of pest infestation and the method used. In general, most professional extermination treatments will provide effective control for 3-6 months, with some lasting up to a year.
For example, a single-application treatment for a minor ant or roach problem may only last 3-4 months, while a more comprehensive treatment for a severe rodent or bed bug infestation could last 6-12 months. The longevity of the treatment depends on factors like the extent of the infestation, the product used, and whether any follow-up or preventive measures are taken.