There are many known toxins lurking in the average home. A few of these common toxins are formaldehyde, trichloroethylene, and benzene. These substances can be found in many common household items and are off-gassed into the air over time. Fortunately, there are steps you can take to remove these air toxins.
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The following is a guide to which plants need to be planted in which season. More specific planting times depend in what particular climate you will be planting. To find out your climate zone and specific planting dates visit the 2012 USDA Zone Hardiness Map.