The solar critter guard installation cost may vary based on your solar power system size, but the complete bird mesh installation typically ranges from $800-$2000. Read More About Going Solar: How Do Solar Panels Work?

If your panels are located right by factories, busy highways, or fields, and the wind often blows the dust at them, you could have more dust coverage than the average solar system. If this is you, cleaning your panels may make financial sense - especially if you live in an area of the country with infrequent rainfall.

Just water pressure from a hose removes bird poo, provided you are patient. The trick is to hose the panel down and then come back 5-10 minutes later after the water has had a chance to soften the poop and spray it again. If it doesn't come off give it another 5-10 minutes and try again.

“It's like a car getting hosed down — you still need to scrub it or use a soil-releasing mixture in order to avoid scrubbing.” Sometimes just water isn't enough, but everyone agrees that soap should never be used. That's why lubricant manufacturer Polywater released its Solar Panel Wash five years ago.