Police west of Toronto on Wednesday warned drivers to keep their car windows closed after a truck spilled crates carrying 5 million bees onto a road.

Halton Regional Police said they received a call around 6:15 a.m. reporting the bee crates had come loose from a truck and spilled onto Guelph Line, north of Dundas Street, in Burlington, Ontario, just west of Toronto.

It was “quite the scene,” Constable Ryan Anderson said.

“Crates were literally on the road and swarms of bees were flying around,” he said. “The initial beekeeper that was on scene was apparently stung a few times.”