The answer to 'how long does centipede treatment last' is that a professional centipede treatment typically lasts for 2-4 months. Centipedes are resilient pests that can be difficult to fully eliminate, so ongoing prevention and monitoring is usually required. The initial treatment will kill the active centipede population, but the eggs and larvae may continue to hatch over the following weeks and months. A pest control professional will recommend a treatment schedule to keep centipedes at bay long-term.
It's important to work with a licensed and experienced pest control technician, as they will have access to the most effective commercial-grade products and application methods. DIY treatments may provide temporary relief, but are unlikely to fully resolve a centipede infestation. A professional can also identify the root causes and recommend structural or sanitation changes to make your home less attractive to centipedes in the future.