What is the simplest device to apply granules for mosquito larvae control?

What is the simplest device to apply granules for mosquito larvae control?

• A. Horn seeder
• B. Spreader
• C. Backpack sprayer
• D. Hand trowel

Answer: (A)

Dispersing larval-control granules is easiest with a simple hand-held device designed to broadcast dry granules evenly over the target area. The horn seeder fits this need well: it is a compact, simple tool with a horn-shaped outlet that smoothly releases granules as you sweep it across standing water or along shoreline edges. This setup minimizes waste and gives you control over where the granules land, which is ideal for small to medium-sized larval habitats and for products like Bti or methoprene granules. A spreader is more suited to dry materials on land and isn’t ideal for applying granules to water surfaces. A backpack sprayer is designed for liquids and would not distribute dry granules as efficiently or evenly. A hand trowel can apply a few granules at a time but is impractical for covering larger areas and would be slow and inconsistent.

Dispersing larval-control granules is easiest with a simple hand-held device designed to broadcast dry granules evenly over the target area. The horn seeder fits this need well: it is a compact, simple tool with a horn-shaped outlet that smoothly releases granules as you sweep it across standing water or along shoreline edges. This setup minimizes waste and gives you control over where the granules land, which is ideal for small to medium-sized larval habitats and for products like Bti or methoprene granules.

A spreader is more suited to dry materials on land and isn’t ideal for applying granules to water surfaces. A backpack sprayer is designed for liquids and would not distribute dry granules as efficiently or evenly. A hand trowel can apply a few granules at a time but is impractical for covering larger areas and would be slow and inconsistent.