You can remove ugly mold or algae stains from your home, fence, mailbox, etc., with a simple water and bleach solution.  Simply mix and spray directly on the stains taking care not to drip onto plants or grass.  Let the solution sit for a few minutes and then rinse away.  Really stubborn stains may require a little extra effort with a scrub brush or rag.  Be sure to rinse surrounding areas well with clean water to remove the bleach solution.  The results will bring a smile to your face!