Dirt, dried leaves, twigs and other debris often make their way into your gutters due to wind and rain. Wind can bring small organic materials from your yard and neighboring houses into your gutters. The rain can also cause the dirt on your roof to travel into your gutter system.

Sludge and silt in your gutters are often the result of different types of debris lumped together. In addition to algae and moss, they may also consist of many other kinds of organic materials that originate from the roof's surface.

A wet/dry vacuum extension allows you to vacuum out your rain gutters from the ground. Most online retailers and hardware stores carry wet/dry vacuum kits. You may even be able to rent one. Pros: The powerful suction allows you to remove most leaves, dirt, other debris, and standing water quickly.

It is not surprising that these particles land in your gutters. If you live near the road or there is ongoing construction in your area, your gutter system will become more prone to dirt accumulation. When debris comes into contact with moisture, mud will form. Over time, mud can restrict water flow in your gutters.