Use of insecticide lambda-Cyhalothrin in USA to 2018 (estimated by USGS)
US Geological Survey
<a rel="nofollow" class="external free" href="https://water.usgs.gov/nawqa/pnsp/usage/maps/show_map.php?year=2018&amp;map=CYHALOTHRINLAMBDA&amp;hilo=L&amp;disp=Cyhalothrin-Lambda">http://water.usgs.gov/nawqa/pnsp/usage/maps/show_map.php?year=2018&amp;map=CYHALOTHRINLAMBDA&amp;hilo=L&amp;disp=Cyhalothrin-Lambda</a>