Guano bicycle All it takes is one broken window and the birds get in. When the birds get in they need a perch. And when the birds perch they leave fertiliser. Time to get the pressure washer out. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email a link to a friend (Opens in new window) Related Feel free to leave a Reply :) Cancel reply