Is your backyard abuzz with bugs? If so, consider this: It may be your fault! Remember, insects like mosquitoes hatch in standing water. That's why so many homeowners are careful to cover their trash cans and stow empty planters—anything to prevent stagnant pools. Too many, however, forget to attend to the gutters. If you allow debris to accumulate here, the resulting buildup can block the free flow of water and allow it to collect, forming a prime breeding ground. You may not be worried about a few itchy bites on your arms and legs. But nowadays, with Zika and West Nile Virus present in many regions, mosquitoes are not only annoying—they can be downright dangerous.