The longevity of roach traps varies depending on factors such as trap type, active ingredients, bait, and environmental conditions. Glue traps and bait traps typically last for several weeks, while electronic traps can last for several months. The effectiveness of roach traps diminishes over time due to factors such as bait depletion or degradation of active ingredients. Regular monitoring and replacement of traps are essential for optimal performance and sustained roach control.