2) Only buy green cleaning products. Here's a resource.
3) Make your own cleaning products out of vinegar, lemon, etc. Here's their recipe. Ingredients: ¼ cup white vinegar, 2 tsp. baking soda, 3 ½ cups hot water, 20 drops of essential oil (eucalyptus, lemon, or peppermint work great), ¼ cup liquid castile soap.
Mix ingredients in a 32 oz. spray bottle, add castile soap last. More recipes here.