However, a study by University of California scientists found that exposing honey bees to realistic doses of flupyradifurone in combination with a common fungicide led to abnormal behaviour and death in many of the bees tested.
The EU authorised flupyradifurone and another pesticide, sulfoxaflor, in 2015.
The Pesticide Action Network said both chemicals were so similar to neonicitinoids that it was wrong to consider them separately.
Sivanto was available in Greece, Italy, the Netherlands and the USA, the Independent said.
“The principle behind the observations reported by the new research (synergistic effects of certain fungicides increasing the toxicity of certain insecticides) are well known to us. We have implemented restrictions for the use of flupyradifurone with azole fungicides in order to prevent this type of effect under practical use conditions.”
Both Bayer and Swiss agrochemical company Syngenta appealed against the EU’s neonicotinoid ban but the EU General Court upheld the bloc’s decision in May 2018.