The answer to 'how often for silverfish control' is that silverfish should be treated on a regular, ongoing basis to effectively manage and control their population. Silverfish are a common household pest that can be difficult to fully eliminate, so regular monitoring and treatment is typically required to keep them under control.
Homeowners should inspect for signs of silverfish activity every 3-6 months and treat with an appropriate insecticide or bait as needed. In high-risk areas or active infestations, monthly or bi-monthly treatments may be necessary. Professional pest control services can also provide more comprehensive and long-term silverfish management solutions.