Syngenta also expressed concern about the decision, noting in a press statement that the proposed ban was triggered by a "hurried and highly theoretical review" of the EFSA report.
"[The report] made fundamental mistakes including a serious over-estimation of the amount of pesticide bees are exposed to in the field. It also ignored key studies and independent monitoring, including recent data from the UK Government, which found no evidence that neonicotinoids impact bee health," Syngenta said.
Both groups recently developed action plans to address bee health concerns and aid agreement between the EU member states and the European Commission.
On the other side of the argument, activist group Avaaz campaigned heavily for the ban, which it says "throws bees a vital lifeline."
The group reports that it has a petition for the ban signed by 2.6 million people, and has organized public opinion polls in the UK and Germany that show 71% and 90% of people polled, respectively, support the ban.
European Parliament Environment Committee Chairman Matthias Groote also welcomed the decision, but noted similarly to Syngenta and Bayer, that further research is needed.
"Bees play a key part in our food chain, and face an alarming decline. However, precise data is still lacking. We shall now try to understand how exactly neonicotinoids affect the behavior of bees. We shall also keep in mind that neonicotinoids are not the only threat bees face," Groote said.
The EU Commission also noted that as soon as new information is available, within no longer than two years, the Commission will review the conditions of approval of neonicotinoids and "take into account relevant scientific and technical developments."