Quote Originally Posted by Andrey Limonchenko View Post
Imidacloprid is 7297x more toxic to honeybees than DDT (acute toxicity). However, acute toxicity is not the main problem. Imidacloprid is highly persistent (160 days halflife time in water, 2 years in soil)
DDT is much more persistent than neonics: http://www.epa.gov/oppt/pbt/pubs/ddt.htm

The alternatives are more dangerous to bees and everyone else.