Home, sweet, home? Not always. Sometimes, it goes sour. Our busy lives leave little time to clean thoroughly. Still, any freshening does wonders for the eye and mind. “Freshening up,” delivers a sense of calm and order to homes, says Elizabeth Goldsmith, professor of family resource management at Florida State University and author of Green Cleaning for Dummies. She suggests using scent-free natural products — baking soda, white distilled vinegar, lemon juice, olive oil and cream of tartar — as home-cleaning agents. The use of such pantry staples as cleaning agents goes back generations, but the current interest in sustainability, as well as food and home safety have renewed their popularity. “This generation of younger parents is very aware of what their kids eat and what their toddlers put in their mouths as they crawl on the floor,’’ Goldsmith says. “People stay home more. The rooms are more lived in. We notice more, such as dirt.’’ A solution of baking soda and water cleans sinks. Remove tannin stains (red wine, coffee, tea, juices, ketchup, soft drinks)…