2.) 10 INCH BRUSH, DURABLE PLASTIC HOUSING, PVC SOFT BRISTLES
3.) ONE WAY ON/OFF VALVE CONNECTOR WITH TOOL ADAPTER
4.) 2.71 OUNCES SOAP DISPENSER
What factors will contribute to dirty solar panels?Pollution / Dust / Leaves / Bird Droppings / Bird Nests/ Rain / Snow / Hail / Fallen BranchesAll of these factors will eventually contribute to the decline in power production and prevent sunlight from reaching solar cells that produce power. The more dirt that hits your solar panels, whether it be from wind, dust or rain, the more your power production will decline. Keeping your solar panels clean is incredibly important for the overall power production and peak performance.