The answer to 'how often for rat control' is that the frequency of rat control measures can vary depending on the severity of the infestation and the specific methods used. As a general guideline, regular monitoring and preventive maintenance should be done every 3-6 months to help keep rat populations under control. This may involve setting traps, sealing entry points, and removing food sources that attract rats.
For more serious infestations, more frequent treatments may be necessary, such as monthly or bi-monthly visits from a professional pest control technician. They can assess the situation, implement more intensive control methods, and provide recommendations for ongoing maintenance to prevent the problem from recurring.