I recall a science show (Quirks & Quarks) here in Canada explaining this. It's not just that neonicotinoids cause harm to bees but the bees actually prefer it.

I recall a science show (Quirks & Quarks) here in Canada explaining this. It's not just that neonicotinoids cause harm to bees but the bees actually prefer it. Bees go out of their way to collect pollen on plants with neonicotinoid pesticides on them.