Hello Gardeners, I’m Amanda McNulty with Clemson Extension and Making It Grow. South Carolina’s Department of Health and Environmental Control has a fact sheet with tips on eliminating mosquito breeding sites in your yard. It states that one of the places most overlooked that can really produce swarm after swarm of these blood-sucking insects (well, the female is bloodsucking, the male relies on nectar), is a closed downspout or gutter. For downspouts, you can get a gizmo similar to a plumber’s snake and work on that drain until it’s clear. I often see small trees growing out of gutters – a sure sign they are filled with decaying organic matter and enough water for mosquitoes to breed. If you’re accustomed getting on the roof and blowing pine straw and leave off, maybe you can clean out those gutters yourself Otherwise, play it safe -- hire a professional and keep your feet on the ground.