This week two nests were found in Jersey – one in a garden on Wellington Hill and another in a bungalow in St Clement.
And a large nest discovered in the Guernsey parish of Torteval last week was removed on Tuesday.
It is believed to have contained about 2,500 hornets, including a number of queens, which would have eventually created further colonies.
The Asian hornet population in the Channel Islands has exploded since last year, when Alderney became the first place in the British Isles to have an official sighting.
Chris Tomlins, Guernsey Beekeepers’ Association president, said: ‘On Friday [before the nest was removed] we were watching large hornets, which had to be queens, flying.
‘Once they mate they can fly up to 60km or 70km to nest. We might have got the nest before they mated, so it is possible we might have got away with it.’
However, it is believed there are at least two more nests in Guernsey – in the parishes of Vale and Forest – as Asian hornets have been seen in both areas.
Mr Tomlins said even if the other two suspected nests are found and destroyed, it was still vital to be vigilant.
‘There are always more being blown over from France, so it is an ongoing battle,’ he said.
The nest was in a relatively busy area, yet it still took weeks to be spotted.
It was also close to a home, but the hornets seemed used to the movement nearby, according to the authorities. Anything getting within six metres of a nest could be attacked.
However, the hornets are more of a problem to the bee population. Just one Asian hornet can eat up to 50 bees in a day.
