News

The Mosquito Research and Control Unit (MRCU) has begun daytime aerial larviciding operations across the Cayman Islands. Over the next two weeks, residents may notice the MRCU aircraft flying at low altitude during the day as part of this essential mosquito control activity. The aircraft will make multiple passes over target areas to ensure full coverage and that no mosquito breeding sites are missed.

What is larviciding?

Larviciding targets mosquito larvae in standing water—before they grow into biting adults. MRCU uses a product that is safe for people, pets, and the environment to treat breeding sites like swamps, ponds, and other water-holding areas.

By stopping mosquitoes at the larval stage, we reduce the number that reach adulthood, helping to keep populations low.

How is it different from adulticiding?

Adulticiding focuses on mosquitoes that have already matured. It typically takes place just after sunset, when adult mosquitoes are most active, using aerial or ground-based spraying.

Larviciding, on the other hand, takes place during daylight hours and is a preventive measure to control mosquitoes before they can fly or bite. Both methods are essential parts of MRCU’s integrated mosquito management program.

What to expect

• MRCU aircraft will be flying low during the day to accurately apply larvicide to mosquito breeding areas.
• Operations will take place over the next two weeks, weather permitting.
• Larviciding is underway in Grand Cayman, with Cayman Brac and Little Cayman to follow.

MRCU remains committed to protecting public health by reducing mosquito populations as safely and effectively as possible.

To learn more, visit the website and social media platforms.