You should buy ant or cockroach traps instead of fluorocarbon sprays ; they are less polluted and can reduce insect populations effectively . you should also try to minimise your purchases of products such as aerosol sprays that contain ozone depleting substances 避免使用含碳氟化合物的灭虫喷雾剂，改用? ?屋等灭虫蚁装置，既可有效减少虫蚁的数目，又可减低污染程度。
