When cleaning solar panels, avoid common mistakes such as using abrasive materials, harsh chemicals, or pressure washers, as they can scratch or damage the surface of the panels. Bird droppings and animal residues can indeed affect solar panel performance, so they should be promptly removed. Stubborn stains or residues can be gently scrubbed with a soft brush and mild soap. For more tips on effective cleaning and environmental considerations, check out this article: https://a1solarstore.com/blog/how-to-clean-solar-panels.html. Considering environmental factors, using eco-friendly cleaning agents and conserving water while cleaning is advisable. Choosing a time when water usage is low or using collected rainwater can also be more environmentally responsible.