If you have a fish pond, decretive stream, or other body of water around your house, you have a prefect habitat for water-loving insects. Certain aquatic insects, such as boatman, collared water scavenger beetles, backswimmer, giant diving beetles, whirligig beetles and giant water bugs live in a body of water feeding on small bugs as prey. Another group of water-loving insects, such as mayflies, dragonflies and damselflies, stoneflies, dobsonflies, caddisflies, horseflies, deerflies, midges, mosquitoes, and blackflies spend only the early stages of their life cycle in the water and devote the rest of their life to being on land near the water. Most water-loving insects are a nuisance by their presence and cause no concerns, except for mosquitoes, black flies, horseflies, deerflies, and backswimmers that will bite people and impact their outdoor activities.
To reduce water-loving insects, avoid using bright lights that attracts bugs to the water. Algae and buildups of organic matters provide sustenance for some insects, such as midges. These food supplies should be removed or kept to the minimum. Regularly trim all tall grass, thick vegetation and shrubs around the water to reduce hiding and resting places for bugs. A dip net can also be used to skim insects and debris off from the swimming pools, but this method is not feasible in case of ponds and lager bodies of water. Pesticides should not be used on or in a close proximity (20 feet) to the water. As applicable, use proven and approved larvicides in the water to manage mosquitoes and black flies. Insect growth regulators used for mosquito larvae control can also reduce the number of midges flying around windows. There are a few oil- based products approved for use to keep water-loving insects under tolerable levels. Spot, crack and crevice applications of proven residual insecticides around light fixtures, windows, doors, and common pest entry points will provide a temporary knockdown of flying insects.
However, mosquito barrier treatments at a three -week interval targeting the foliage surfaces around a structure will reduce the populations of most water-loving insects to acceptable levels.