A professional who sprays marshland, drainage ditches, or catch-basins with insecticide, using portable compressed-air spray tank, to control breeding of mosquitoes.

• Removes blockage from area being sprayed, using pick and shovel, to facilitate drainage.
• May drive truck equipped with gasoline-powered fogger to spray insecticide over designated areas.
• May place poison bait in storm sewers and ditches to exterminate rodents.