Neonicotinoid-based pesticides have been used safely across millions of hectares of European crops for over 10 years.
The small number of instances of damage to bee health from these pesticides has come from the very rare occasions when farmers have used the product incorrectly (e.g. not followed label instructions).
Some theoretical research recently has purported to show that pesticides are directly responsible for bee losses, even when they are applied correctly and appropriately at the right time and in the right place. There is no real-life evidence to support this conclusion.