Diazinon is NOT approved for use:
"EPA Issues Final Reminder of "Stop Sale" Date for Diazinon
EPA is issuing a final reminder notice to pesticide retailers that the stop-sale date for all outdoor diazinon home, lawn, and garden products is December 31, 2004. After that date, it will be unlawful to sell diazinon outdoor non-agricultural use products in the United States. This provision is part of an agreement between EPA and diazinon registrants to phase out and eliminate virtually all residential uses of the insecticide."
found at:
http://www.epa.gov/agriculture/news/dec2004.html
"EPA Issues Final Reminder of "Stop Sale" Date for Diazinon
EPA is issuing a final reminder notice to pesticide retailers that the stop-sale date for all outdoor diazinon home, lawn, and garden products is December 31, 2004. After that date, it will be unlawful to sell diazinon outdoor non-agricultural use products in the United States. This provision is part of an agreement between EPA and diazinon registrants to phase out and eliminate virtually all residential uses of the insecticide."
found at:
http://www.epa.gov/agriculture/news/dec2004.html