MRCU Targets Mosquito Breeding Areas in Sister Islands

The Mosquito Research and Control Unit (MRCU) will begin aerial larvicide operations in the Sister Islands on Wednesday, 11 November 2026. Treatment will start in Little Cayman before moving to Cayman Brac, with completion anticipated by the end of the week, weather permitting.

During operations, residents will see the MRCU aircraft flying at low altitude, distributing treatment pellets over targeted mosquito breeding areas. These flights allow the product to be applied precisely where it is needed.

MRCU will use Natular G-30. The product targets developing mosquitoes before they become biting adults, helping to reduce mosquito numbers at their source. Its active ingredient, spinosad, is derived from a naturally occurring soil bacterium.

When applied according to its label, Natular G-30 does not pose a risk to residents or pets. MRCU follows the product’s application requirements and environmental precautions to deliver effective mosquito control while protecting the surrounding environment.

Larviciding is an important part of MRCU’s integrated mosquito management programme, which combines monitoring, targeted treatments and public education to reduce mosquito populations.

For updates on planned mosquito control activities, residents can send a WhatsApp message to 936-8503 and follow the automated response to access MRCU’s Control Activity webpage and other information.