Common crops affected
What is it?
Mosquitoes lay eggs in standing or slow-moving water. The eggs hatch into aquatic larvae (wrigglers) that feed and develop in the water before pupating and emerging as adults. Eliminating or treating the water where larvae develop breaks the life cycle at its most vulnerable point.
How to identify it
- Small wriggling larvae just below the water surface in ponds, troughs, and containers
- Larvae that dive when the water is disturbed
- Standing or stagnant water in irrigation, drainage, containers, or low spots
- Rising adult mosquito numbers near persistent water
Damage and how it spreads
Beyond the nuisance and bites, mosquitoes can transmit disease to people and livestock, and persistent breeding sites around a farm or orchard sustain large populations. Because adults are mobile and hard to control, targeting larvae in the water is the most reliable, lowest-residue way to suppress mosquitoes.
How to control it
- Eliminate or drain unnecessary standing water and containers where possible.
- Keep troughs, tanks, and drainage moving or covered.
- Identify persistent breeding sites that cannot be drained.
- Treat those sites with a biological larvicide that interrupts the larval life cycle.
Recommended Vegalab solution: Mosquito BioControl
Vegalab Mosquito BioControl uses a biological active to interrupt the mosquito larval life cycle in standing water, without chemical residues. Apply to ponds, troughs, drainage, and other persistent breeding sites that cannot be drained, following the label for dosing and reapplication. Combine treatment with draining and source reduction wherever possible.
| Role | Product | Use |
|---|---|---|
| Primary control | Mosquito BioControl | Biological larval control in water |
Preventing it next season
Reduce standing water at the source, keep water moving or covered, and treat persistent breeding sites that cannot be eliminated. Regular monitoring of likely sites keeps populations down.
Claims and product availability vary by jurisdiction. Always read and follow the product label.

