It’s beginning to look like the time to spiff up your deck or patio after the Summer’s use. Skip the power washer and instead sprinkle a mixture of 1 cup of baking soda and about 10 drops of  tea tree essential oil over the area (use more or less accordingly to the size of your area). Let this sit for 20 minutes then hose off. The dirt and grime will wash away! The tee tree oil kills mold and mildew while the baking soda acts like a scrub.