How often do glue boards need replacing?
Glue boards will need changing once the surface is covered with flying insects and it loses its ability to catch any more. How long it will take for glue boards to fill will depend on the level of infestation you have. Monitoring the number of insects caught on a daily or weekly basis will help you to get an idea of the infestation levels throughout the year. This information will then let you formulate an appropriate servicing schedule.