Sgiath is thought to be the UK's first sea squirt-hunting dog and has been trained to sniff out the marine pest.
Ministers warn the risk of serious and potentially life-threatening stings is expected to increase.
The invasive water soldier threatens plants and animals in Beverley Beck, the council says.
The States of Guernsey says the "fight is still on" to stop the spread of Asian hornets.
The "highly invasive" shrimp are larger than native species and can damage ecosystems.
Experts in the South West and Channel Islands reflect on rising numbers of the invasive species.
A pair of grey squirrels was reportedly brought to the United Kingdom by a Cheshire banker in 1876.
The Asian Hornets Team removes five secondary nests in the space of a week, officials say.
Environment bosses the play area in Millennium Park may remain closed into Tuesday.
