Don't call a pricey plumber! Anyone with a few tools can unclog a drain -- without even resorting to those strong, toxic chemicals. Most of the time, anyway. You will need baking soda, vinegar, rubber gloves, cleaning rags or duct tape, a rubber plunger, a plumber's snake, petroleum jelly, a bucket or pan, and a length of hose. WARNING: Do not try this if you have already used a commercial drain opener, as it can create harmful fumes.