Bumblebees can react aggressively to a number of scents including alcohol, perspiration, perfumes, scented soaps and aftershave, the company points out. They are also attracted to the colour blue, particularly light blue, which should be avoided.
Koppert, which supplies commercial bumblebee hives for pollination, also points out that roughly one per cent of the population will have an allergic reaction to bumblebee stings, but this does not occur after the first sting - rather, vulnerable individuals form antibodies only after a previous sting. The reaction can occur any time from a few seconds to half-an-hour after stinging and may require hospitalisation.
Companies that regularly use bumblebees may consider keeping an adrenaline auto-injector on site for such cases, Koppert advised.
The A3 poster can be downloaded for free online from www.koppert.com.