In another post, I mentioned having used equal parts household chlorine bleach and white vinegar to remove green mold growing on the vinyl siding facade on the north side of my home. It is quite effective. But, I've found something much better.
While the bleach/vinegar solution does a good job, using it is not necessarily a good idea. It does release a noxious gas and should be used only in well ventilated areas. While I suffered no ill effects from cleaning my vinyl with it, I have no idea what impact its use might have on the environment.
I keep a small spray bottle filled with 3% (10 volume) hydrogen peroxide by the kitchen sink. I spray the faucet, faucet base, and handle with this peroxide after cleaning the sink. I wait a minute and then rinse.
Mold has a tendency to grow on the faucet, particularly around the base. If a heavy film is allowed to accumulate, you will see a lot of foaming when peroxide is sprayed on it. It kills the mold, and the foaming/boiling action dislodges the mold so it can easily be rinsed away. By spraying the faucet daily, there is no chance of mold buildup and new growth, too small to be seen, is quickly eradicated.
Peroxide is deadly to living tissue. (It should never be used full strength on open wounds). It occurred to me that the mold on the vinyl consisted of living organisms and should respond to being treated with peroxide.
I poured a half cup of peroxide into a small glass bowl and added a couple drops dish detergent as a surfactant. With a wide (4 inch) paint brush, I painted a thin film of the solution on the vinyl. I waited 5 minutes and then sprayed the treated area with a garden hose at full force. With no scrubbing, the treated area was clean.
While my way would be ideal as a spot treatment, I see no reason why large areas couldn't be cleaned by applying the solution with a hose end sprayer. I would suggest applying all safety precautions regarding your person and foundation shrubbery, etc.
This idea just came to me 'out of the blue'. I'm sure I'm not the first to think of it, but I am sure I will soon be putting it to use. The north side of my home is getting greener by the day. I want a green lawn, not a green house (maybe wedgewood blue, but not mold green).