FOR A CLOGGED DRAIN
Pour in half a cup of dry baking soda, followed by half a cup of vinegar, then cover the drain. Wait 15 minutes, then flush with two cups of hot or boiling water.
And keep in mind... If you don't want to give up commercial cleaners, cast a skeptical eye on products labeled "eco-friendly" or "organic." Look instead for specific claims (such as "solvent-free" or "phosphate-free") and for the "Design for the Environment" label: These products have been carefully screened for their environmental effects.