The answer to 'how long does silverfish treatment last' is that the effectiveness of silverfish treatment can vary, but typically lasts for several months to a year. Silverfish are persistent pests that can be difficult to completely eliminate, so ongoing prevention and monitoring is often required.
The longevity of a silverfish treatment depends on factors like the severity of the infestation, the type of treatment used, and how well the homeowner follows up with ongoing prevention measures. Professional treatments using insecticides or baits may provide several months of control, while DIY methods like diatomaceous earth or boric acid may need to be reapplied more frequently.