Want to kill more mosquitoes, the net on your trap might need replacing, so be sure to check it often. Nets that are clogged with dead mosquitoes, spiders, pollen and dust will have an adverse effect on the vacuum's ability (airflow) to work optimally. Start each season with a new Mosquito Magnet® Liberty Net and replace every 21 days or sooner. The drawstring on the net makes disposal and replacement of the net simple. Whether constructed with rigid nets or nets with drawstrings, our self-contained nets eliminate any direct contact with the dead insects and mosquitoes. A net that is replaced often ensures optimum outdoor mosquito control. Protect your family from mosquitoes and biting insects who may carry serious diseases - keep your Mosquito Magnet® at peak performance with regular replacement of mosquito attractants and nets.